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D. E. Anagnostou and A. A. Gheethan, "A Coplanar Reconfigurable Folded Slot Antenna Without Bias Network for WLAN Applications", IEEE Antennas and Wireless Propagation Letters, Vol. 8, pp: 1057-1060, Sept. 2009. 2008


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(PDF) Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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A dual band microstrip-fed slot antenna IEEE Transactions on Antennas and Propagation 2011 59 5 1720 1724 2-s2.0-79955623132 10.1109/TAP.2011.2123065 10 Gheethan A. A. Anagnostou D. E. Broadband and dual-band coplanar folded-slot antennas (CFSAs) IEEE Antennas and Propagation Magazine 2011 53 1 80 89 2-s2.0-80052009163 11 Hsieh C. Chiu T. Lai C.


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CPW-Fed Stub-Loaded Slot Dipole Antenna Design for Dual-Band Operation Jianxing Li1, *, Jianying Guo1, Hongyu Shi1,BinHe1, and Anxue Zhang1, 2 Abstract—A novel uniplanar slot dipole antenna fed by a coplanar waveguide (CPW) is proposed for dual-band operation. The frequency ratio between the first spurious and fundamental modes of the slot


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A Dual-Band Rectangular CPW Folded Slot Antenna for GNSS Applications | Open Access Journals
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A Dual-Band Rectangular CPW Folded Slot Antenna for GNSS Applications | Open Access Journals
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The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
A mathematical derivation, based on a transmission-line model for the asymmetrically-fed coplanar folded-slot antenna, is used on a single-frequency coplanar folded-slot antenna to determine the condition for a second resonance.
In this way, when the second resonant frequency is close to the first, broadband uniplanar antennas with ~30%, bandwidth can be designed.
The effect of the ratio of the feed-shift distance to the length of the stub on the bandwidth is an important parameter, and is shown for both the broadband and dual-band designs.
The presented method and tables are simple to use, provide very accurate results, and correctly predict the resonant frequencies for the dual-band coplanar folded-slot antennas.
The theoretical and simulated results were verified by measurements of fabricated prototypes.
The design guidelines cover a broad range of applications in the 2.
The properties of the reconfigurable antennas have been adopted to achieve selectivity in the polarization, pattern, and frequency of the radiating structure, thus can replace the multi-band conven- tional antennas.
read more this way, the slots can act as directors or reflectors on-demand, allowing steering the see more in specific directions.
A pattern reconfigurable technique is used to design the element that enhances scanning gain and decreases the side lobe level throughout the entire scanning broadband and dual band coplanar folded slot antennas (cfsas) />The array is comprised of eight elements in a 2× 4 arrangement with uniform spacing.
The proposed phased array operates at 5.
Significant outcomes include also the reduced side-lobe level less than 7.
With the absence of any structure above the ground level, the high efficiency, and the coverage of the entire upper half-space, this proposed antenna array is very attractive for a variety of phased array applications, particularly those that require a flush-mounted structure.
In this study, cylindrical array of stripline fed rounded bow-tie slot antennas is designed to be used for avionics applications.
The array element is fed by a T broadband and dual band coplanar folded slot antennas (cfsas) strip line.
Shape of the slot is modified from rectangular to rounded bow-tie to provide sufficient bandwidth for telemetry application.
Furthermore, vias are placed around slots to prevent unwanted parallel plate modes of stripline structure.
It is observed that, location of vias is critical in the design of the antenna.
Thus, parametric studies are performed in order to determine the locations of vias.
Designed antenna is fabricated and measured to validate the simulation results.
Measurement and broadband and dual band coplanar folded slot antennas (cfsas) results agree well with each other.
In this paper, a flexible reconfigurable antenna mounted on curved cylindrical configurations is presented.
The proposed design is based on a folded slot antenna printed on a flexible Polyethylene Terephthalate PET substrate.
One PIN-diode is incorporated to the antenna surface to make it reconfigurable in terms of its resonant frequencies and polarizations.
The impact of curved cylindrical geometries, such as circumferential and axial configurations, on the antenna radiation characteristics is discussed.
The simple uniplanar quasi-optical mixer uses the effect of orthogonal broadband and dual band coplanar folded slot antennas (cfsas) in the folded slot antenna fed by slotline and coplanar waveguide on opposite sides.
The input impedance of the antenna is analyzed with the space domain integral equation technique.
Experiments at 11 GHz have demonstrated antenna and mixer operation.
The antenna shows reasonable radiating properties.
By taking advantage of even and odd modes in the antenna, balanced mixing can be achieved with good conversion loss Planar and cylindrical dual frequency folded slot antennas utilizing a self-matching technique have been presented.
The self-matching technique greatly improved the performance of the antennas while not further complicating the antenna design.
The antennas exhibit very good return loss and radiation characteristics.
The antennas demonstrated a gain between 3.
The antennas are ideally suited for communication and radar systems, which require robust antennas that can operate at multiple frequencies A half-wave slot in a metal sheet may be used as a resonant aerial in a manner similar to a half-wave dipole.
The polar diagrams are the same, but the directions of vibration of the electric and magnetic fields are interchanged.
If the slot is driven by means of a transmission line connected between opposite edges at the centre, the input impedance at resonance is about 485 ohms.
The relation between resonant dipoles and resonant slots is an example of what in optics is known as Babinet's principle.
This principle is established in the form required for electromagnetism and quantitative relations are deduced from it.
Arrays of slots may be fed broadband and dual band coplanar folded slot antennas (cfsas) transmission lines or wave guides to form linear or broadside aerials.
Resonant gratings of slots may be used to polarize incident waves or act as band-pass filters.
Single resonant slots may be used in wave guides in the same way as paralleltuned circuits are shunted across transmission lines.
All devices adopted in connection with wire aerials have complements for slot aerials.
Slots and dipoles may be combined to produce aerials with special polarization properties.
Slots with dielectric plugs may be broadband and dual band coplanar folded slot antennas (cfsas) in the skin https://spin-casinos-deposit.website/and-slots/hoyle-slots-and-video-poker.html aircraft to provide dragless aerials.
In addition, Babinet's principle may be used to reduce new problems to old ones whose solution is already known.
These include problems connected with discontinuities in transmission lines, wave guides with corrugated sides, magnetron cavities, and the leakage of electromagnetic radiation through holes in metal walls.
There is a wide variety of problems, both practical and theoretical for which it is always wise to consider the possibility of applying Https://spin-casinos-deposit.website/and-slots/free-video-poker-and-slot-machines.html principle.
The design of a reconfigurable single folded slot antenna is shown.
Metal strips are used in the slot to manipulate the ground size around the slot, which yields to changing the slot's perimeter and thus changing the resonant frequency of the antenna.
The design of a single folded slot antenna is first illustrated.
Later, the design is modified to be reconfigurable.
The resonant frequencies for the reconfigurable design are chosen to be applicable with the WLAN applications.
The antenna design, simulation, and measurements are described.
The simulated results both for the return loss and maximum gain agree with the measurements.
The antenna has similar radiation patterns in both bands.
The advantage of this design is that the length of the bias lines does not affect the antenna performance, thus making its design, feeding, and matching an extremely simple and low-cost procedure for antenna designers.
The broadband and dual band coplanar folded slot antennas (cfsas) of planar folded slot antenna characteristics fabricated on alumina substrates over the temperature range of 25 to 400 C are presented.
An on-wafer TRL calibration was used to deembed the CPW feed line for return loss measurements and to measure the increase in the effective dielectric constant and attenuation of the CPW lines as a function of temperature.
The measured antenna characteristics show that the resonant frequency varies by less than 1%, the minimum return loss increases from 11 to 16 dB, the quality factor increases from 25.
Finally, the effect of the measurement https://spin-casinos-deposit.website/and-slots/signals-and-slots-in-pyqt4.html setup on the measured radiation patterns is discussed.
Recently there has been much interest in slot antennas for microwave and millimeter wave applications.
CPW-fed slots are one of the most popular kinds of antennas since they can be easily integrated with microwave integrated circuits MICs and monolithic microwave integrated circuits MMICs Tsai, H.
Slot antennas have bidirectional radiation patterns.
Unidirectional patterns can be achieved with the use of a reflector.
This includes the cavity-backed slot design Yeganeh, S.
It has been demonstrated that folded slot antennas have input impedances that can be easily matched with conventional transmission lines Tsai and York.
We present two types of modified folded slot antennas MFSAs which provide impedance bandwidths of 44% and 80% respectively within a VSWR of 2:1.
In this work, the finite difference time domain method is used to analyze CPW-fed FSA with a thin film ferroelectric.
FDTD is apt for analyzing different types of planar antennas on dielectric substrates with different thickness.
The resonant frequency, input impedance, bandwidth, radiation pattern and gain of the antenna are presented.
The important design considerations necessary for this fabrication are also presented in this study.
A novel mm-wave finite ground coplanar FGC folded slot antenna on a low-resistivity Si substrate 1 Ω-cm with a broadband and dual band coplanar folded slot antennas (cfsas) interface layer is presented for the first time.
The antenna resonates around 30 GHz with a return loss of 14.
Measured radiation patterns indicate the existence of a main lobe, but its radiation pattern is affected by a strong surface wave mode.
This antenna can be part of various low cost wireless communication systems Join ResearchGate to find the people and research you need to help your work.
A novel center-fed wideband slotline antenna is proposed using the multi-mode resonance concept.
By symmetrically introducing one or two pairs of slot stubs along the slotline resonator near the nulls of electric field distribution of the second odd-order mode, two modes are excited in a single slotline radiator.
With the help of these stubs, the second odd-order mode can be gradually merged with its first counterpart, resulting in a wideband radiation characteristic with two resonances.
Prototype antennas are then designed and fabricated to experimentally validate the principle and design approach.
It is shown that the operation fractional bandwidth of the proposed slotline antenna could be effectively increased to 31.
This paper proposed a wideband, efficient and high gain circularly polarized CP array antenna based on gap waveguide technology for 30 GHz frequency band applications.
The antenna sub-array is a 2 ×2-slot groove gap waveguide GGW -based cavity-backed antenna.
The antenna is fed by a ridge gap waveguide RGW.
Two corners of the radiating slots are truncated to obtain CP radiation and some corrugations are introduced to the radiating layer to suppress the surface waves between neighbor sub-arrays.
The planar 16-way feeding network based on RGW is utilize to feed the sub-arrays.
The feeding network is multi-level sequential phased with a quadrature phase shift.
To validate the array antenna performance, a prototype of the antenna has been manufactured using standard milling technology.
The measured reflection coefficient bandwidth is about 22 % covering from 28.
The maximum measured gain is 23.
A novel compact square slot antenna design with coplanar waveguide CPW -fed for dual-band operation is presented.
The proposed https://spin-casinos-deposit.website/and-slots/rome-and-egypt-hd-slot-machine-android-free.html is simply composed of a square slot resonator and a monopole radiator.
By employing the special square slot structure, the antenna can achieve a new resonance while maintaining a small size.
Based on this concept, a prototype of dual-band antenna is designed, fabricated and tested.
The experimental results show the antenna has the impedance bandwidths of 400 MHz 2.
Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in Antennas and many other scientific topics.

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BROADBAND COPLANAR WAVEGUIDE-FED WIDE-SLOT ANTENNA A. Dastranj and M. Biguesh School of Electrical and Computer Engineering Shiraz University Shiraz, Iran Abstract|A large bandwidth wide-slot antenna, fed by coplanar waveguide (CPW), is proposed. Experimental investigations and detailed simulations are conducted to understand its behavior and


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ResearchGate
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broadband and dual band coplanar folded slot antennas (cfsas)

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Abstract: - This paper presents a small wide band printed antenna with a single feed that would be useful for L-band and S-band telemetry systems. The printed antenna consists of coplanar waveguide fed meandered patch radiator element. This antenna will also be useful for integrated network enhanced telemetry (iNET) program.


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Dimitris Anagnostou - Google Scholar Citations
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Dimitris Anagnostou - Google Scholar Citations
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A Novel Planar Printed Dual-Band Magneto-Electric Dipole Antenna

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Abstract. This paper presents a unified design methodology for dual-band and broadband coplanar folded-slot antennas (CFSAs). The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.


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(PDF) Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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The Infona portal uses cookies, i.
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I accept This paper presents a unified design methodology for dual-band and broadband coplanar folded-slot antennas CFSAs.
The design is achieved by using a coplanar frogs and slots antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
A mathematical derivation, based on a transmission-line model for the asymmetrically-fed coplanar folded-slot antenna, is used on a single-frequency coplanar folded-slot antenna to determine the condition for a second resonance.
In this way, when the second resonant frequency is close broadband and dual band coplanar folded slot antennas (cfsas) the first, broadband uniplanar antennas with ~30%, bandwidth can be designed.
The effect of the ratio of the feed-shift distance to the length of the stub on the bandwidth is an important parameter, and is shown for both the broadband and dual-band designs.
The presented method and tables are simple to use, provide very accurate results, and correctly predict the resonant frequencies for the dual-band coplanar folded-slot antennas.
The theoretical and simulated results were verified by measurements of fabricated prototypes.
The design guidelines cover a broad range of applications in the 2.
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PDF | In this paper, a dual-band rectangular CPW folded slot antenna is studied for the Global Navigation Satellite Systems (GNSS) applications. The antenna operates for all the bands of the GNSS.


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Compact Broadband CPW-fed Taper-shaped Monopole Antenna with L-slots for C-band Applications Dhirgham K. Naji Department of Electronic and Communications Engineering, College of Engineering, Alnahrain University, Baghdad, Iraq . Abstract. A design approach for the compact broadband coplanar waveguide (CPW)-fed tapered monopole antenna


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PIER C Online - A Monopole Antenna with Dual-Band Reconfigurable Circular Polarization
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Luo Abstract: This paper describes a monopole antenna with dual-band switchable circular polarization CP sense in WLAN and WiMAX bands.
The proposed antenna consists of a rectangular patch fed by a microstrip line and a ground plane embedded with a T-shaped slot integrated with PIN diodes.
The slotted ground is capable of exciting CP sense around 2.
Two triangular strips are added to improve impedance matching.
The CP sense of the proposed antenna can be click to see more between the right-handed circular polarization RHCP and left-handed circular polarization LHCP by switching the states of PIN broadband and dual band coplanar folded slot antennas (cfsas) in the slot.
The lower band 3-dB axial ratio AR bandwidth is 8.
Simulated analysis and measured results are carried out and good agreement is achieved.
Luo, "A Monopole Antenna with Dual-Band Reconfigurable Circular Polarization," Progress In Electromagnetics Research C, Vol.
Mehranpour, "A frequency-reconfigurable monopole antenna using switchable slotted ground structure," IEEE Antennas Wireless Propag.
Gheethan, "A coplanar reconfigurable folded slot antenna without bias network for WLAN applications," IEEE Antennas Wireless Propag.
Anagnostou, "Broadband and dual-band coplanar folded-slot antennas CFSAs ," IEEE Antennas Propag.
Laheurte, "Circularly polarised antenna with switchable polarisation sense," Electron.
Tentzeris, "A novel single-feed circular microstrip antenna with reconfigurable polarization capability," IEEE Trans.
Tentzeris, "Pattern and frequency reconfigurable annular slot antenna using PIN diodes," IEEE Trans.
Luk, "A circularly polarized antenna with wide axial ratio beamwidth," IEEE Trans.
Wang, "Novel broadband monopole antennas with dual-band circular polarization," IEEE Trans.
Row, "Reconfigurable square-ring microstrip antenna," IEEE Trans.
Kim, "A reconfigurable microstrip antenna for switchable polarization," IEEE Microw.
Zhao, "The U-shaped structure in dual-band circularly polized slot antenna design," IEEE Antennas Wireless Propag.
Yung, "A novel unidirectional dual-band circularly-polarized patch antenna," IEEE Trans.
© Copyright 2010 EMW Publishing.

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A compact (33 × 16 × 1.6 mm 3) and novel shaped hexa-band frequency-reconfigurable antenna with a very wide tuning band is proposed.The proposed antenna operates at two single band modes (i.e., 3.5 GHz and 4.8 GHz) and two dual band modes (i.e., 2.10 GHz, 4.15 GHz and 2.4 GHz, 5.2 GHz) depending upon the switching states.


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(PDF) Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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We use cookies to make interactions with our website easy and meaningful, to better understand the use of our services, and to tailor advertising.
For further information, including about cookie settings, please read our.
By continuing to use this site, you consent to the use of cookies.
Got it We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.
The design is achieved by using a coplanar https://spin-casinos-deposit.website/and-slots/ned-and-his-friends-slot-machine.html antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
A mathematical derivation, based on a transmission-line model for the asymmetrically-fed coplanar folded-slot antenna, is used on a single-frequency coplanar folded-slot antenna to determine the condition for a second resonance.
In this way, when the second resonant frequency is close to the first, broadband uniplanar antennas with ~30%, bandwidth can be designed.
The effect of the ratio of the feed-shift distance to the length of the stub on the bandwidth is an important parameter, and is shown for both the broadband and dual-band designs.
The presented method and tables are simple to use, provide very accurate results, and correctly predict the resonant frequencies for the dual-band coplanar folded-slot antennas.
The theoretical and simulated results were verified by measurements of fabricated prototypes.
The design guidelines cover a broad range of applications in the 2.
The properties of the reconfigurable antennas have been adopted to achieve selectivity in the polarization, pattern, and frequency of the radiating structure, thus can replace the multi-band conven- tional antennas.
In this way, the slots can act as directors or reflectors on-demand, allowing steering the beam in specific directions.
A pattern reconfigurable technique is used to design the element that enhances scanning gain and decreases the side lobe level throughout the entire scanning range.
The array is comprised of eight elements in a 2× 4 arrangement with uniform spacing.
The proposed phased array operates at 5.
Significant outcomes include also the reduced side-lobe level less than 7.
With the absence of any structure above the ground level, the high efficiency, and the coverage of the entire upper half-space, this proposed antenna array is very attractive for a variety of phased array applications, particularly those that require a flush-mounted structure.
In this study, cylindrical array of stripline fed rounded bow-tie slot antennas is designed to be used for avionics applications.
The array element is fed by a T shaped strip line.
Shape of the slot is modified from rectangular to rounded bow-tie to provide sufficient bandwidth for telemetry application.
Furthermore, vias are placed around slots to prevent unwanted parallel plate modes of stripline structure.
It is observed that, location of vias is critical in the design of the antenna.
Thus, parametric studies are performed in order to determine the locations of vias.
Designed antenna is fabricated and measured to validate the simulation results.
Measurement and simulation results agree well with each other.
In this paper, a flexible reconfigurable antenna mounted on curved cylindrical configurations is presented.
The proposed design is based on a folded slot antenna printed on a flexible Polyethylene Terephthalate PET substrate.
One PIN-diode is incorporated to the antenna surface to make it reconfigurable in terms of its resonant frequencies and polarizations.
The impact of curved cylindrical geometries, such as circumferential and axial configurations, on the antenna radiation characteristics is discussed.
The simple uniplanar quasi-optical mixer uses the effect of orthogonal modes in the folded slot antenna fed by slotline and coplanar waveguide on opposite sides.
The input impedance of the antenna is analyzed with the space domain integral equation technique.
Experiments at 11 GHz have demonstrated antenna and mixer operation.
The antenna shows reasonable radiating properties.
By taking advantage of even and odd modes in the antenna, balanced mixing can be achieved with good conversion loss Planar and cylindrical dual frequency folded slot antennas utilizing a self-matching technique have been presented.
The self-matching technique greatly improved the performance of the antennas while not further complicating the antenna design.
The antennas exhibit very good return loss and radiation characteristics.
The antennas demonstrated a gain between 3.
The antennas are ideally suited for communication and radar systems, which require robust antennas that can operate at multiple frequencies A half-wave slot in a metal sheet may be used as a resonant aerial in a manner similar to a half-wave dipole.
The polar diagrams are the same, but the directions of vibration of the electric and magnetic fields are interchanged.
If the slot is driven click means of a transmission line connected between opposite edges at the centre, the input impedance at resonance is about 485 ohms.
The relation between resonant dipoles and resonant slots is an example of what in optics is known as Babinet's principle.
This principle is established in the form required for electromagnetism and quantitative relations are deduced from it.
Arrays of slots may be fed by transmission lines or wave guides to form linear or broadside aerials.
Resonant gratings of slots may be used to polarize incident waves or act as band-pass filters.
Single resonant click at this page may be used in wave guides in the same way as paralleltuned circuits are shunted across transmission lines.
All devices adopted in connection with wire aerials have complements for slot aerials.
Slots and dipoles may be combined to produce aerials with special polarization properties.
Slots with dielectric plugs may be used in the skin of aircraft to provide dragless aerials.
In addition, Babinet's principle may be used to reduce new problems to old ones whose solution is already known.
These include problems connected with discontinuities in transmission lines, wave guides with corrugated sides, magnetron cavities, and the leakage of electromagnetic radiation through holes in metal walls.
There is a wide variety of problems, both practical and theoretical for which it is always wise to consider the possibility of applying Bubinet's principle.
The design of a reconfigurable single folded slot antenna is shown.
Metal strips are used in the slot to manipulate the ground size around the slot, which yields to changing the slot's perimeter and thus changing the resonant frequency of the antenna.
The design of a single broadband and dual band coplanar folded slot antennas (cfsas) slot antenna is first illustrated.
Later, the design is modified to be reconfigurable.
The resonant frequencies for the reconfigurable design are chosen to be applicable with the WLAN applications.
The antenna design, simulation, and measurements are described.
The simulated results both for the return loss and maximum gain agree with the measurements.
The antenna has similar radiation patterns in both bands.
The advantage of this design is that the length of the bias lines does not affect the antenna performance, thus making its design, feeding, and matching an extremely simple and low-cost procedure for antenna designers.
The dependency of planar folded slot antenna characteristics fabricated on alumina substrates over the temperature range of 25 to 400 C are presented.
An on-wafer TRL calibration was used to deembed the CPW feed line for return loss measurements and to measure the increase in the effective dielectric constant and attenuation of the CPW lines as a function of temperature.
The measured antenna characteristics show that the resonant frequency varies by less than 1%, the minimum return loss increases from 11 to 16 dB, the quality factor increases from 25.
Finally, the effect of the measurement test setup on the measured radiation patterns is discussed.
Recently there has been much interest in slot antennas for microwave and millimeter wave applications.
CPW-fed slots are one of the most popular kinds of antennas since they can be easily integrated with microwave integrated circuits MICs and monolithic microwave integrated circuits MMICs Tsai, H.
Slot antennas have bidirectional radiation patterns.
Unidirectional patterns can be achieved with the use of a reflector.
This includes the cavity-backed slot design Yeganeh, S.
It has been demonstrated that folded slot antennas have input impedances that can be easily matched with conventional transmission lines Tsai and York.
We present two types of modified folded slot antennas MFSAs which provide impedance bandwidths of 44% and 80% respectively within a VSWR of 2:1.
In this work, the finite difference time domain method is used to analyze CPW-fed FSA broadband and dual band coplanar folded slot antennas (cfsas) a thin film ferroelectric.
FDTD is apt for analyzing different types of planar antennas on dielectric substrates with different thickness.
The resonant frequency, input impedance, bandwidth, radiation pattern and gain of the antenna are presented.
The important design considerations necessary for this fabrication are also presented in this study.
A novel mm-wave finite ground coplanar FGC folded slot antenna on a low-resistivity Si substrate 1 Ω-cm with a polyimide interface layer is presented for the first time.
The antenna resonates around 30 GHz with a return loss of 14.
Measured radiation patterns indicate the existence of a main lobe, but its radiation pattern is affected by a strong surface wave mode.
This antenna can be part of various low cost wireless communication systems Join ResearchGate to find the people and research broadband and dual band coplanar folded slot antennas (cfsas) need to help your work.
A novel center-fed wideband slotline antenna is proposed using the multi-mode resonance concept.
By symmetrically introducing one or two broadband and dual band coplanar folded slot antennas (cfsas) of slot stubs along the slotline resonator near the nulls of electric field distribution of the second odd-order mode, two modes are excited in a single slotline radiator.
With the help of these stubs, the second odd-order mode can be gradually merged with its first counterpart, resulting in a wideband radiation characteristic with two resonances.
Prototype antennas are then designed and fabricated to experimentally validate the principle and design approach.
It is shown that the operation fractional bandwidth of the proposed slotline antenna could be effectively increased to 31.
This paper proposed a wideband, efficient and high gain circularly polarized CP array antenna based on gap waveguide technology for 30 GHz frequency band applications.
The antenna sub-array is a 2 ×2-slot groove gap waveguide GGW -based cavity-backed antenna.
The antenna is fed by a ridge gap waveguide RGW.
Two corners of the radiating slots are truncated to obtain CP radiation and some corrugations are introduced to the radiating layer to suppress the surface waves between neighbor sub-arrays.
The broadband and dual band coplanar folded slot antennas (cfsas) 16-way feeding network based on RGW is utilize to feed the sub-arrays.
The feeding network is multi-level sequential phased with a quadrature phase shift.
To validate the array antenna performance, a prototype of the antenna has been manufactured using standard milling technology.
The measured reflection coefficient bandwidth is about 22 % covering from 28.
The maximum measured gain is 23.
A novel compact square slot antenna design with coplanar waveguide CPW -fed for dual-band operation is presented.
The proposed antenna is simply composed of a square slot resonator and a monopole radiator.
By employing the special square slot structure, the antenna can achieve a new resonance while maintaining a small size.
Based on this concept, a prototype of dual-band antenna is designed, fabricated and tested.
The experimental results show the antenna has the impedance bandwidths of 400 MHz 2.
Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in Antennas and many other scientific topics.

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Keywords––Microstrip antenna, dual band, broadband, impedance bandwidth, gain. I. INTRODUCTION Microstrip antennas consist of a very thin metallic strip (patch) on a grounded substrate found extensive applications in different fields due to their attractive features. These antennas are low profile, light weight, compact and


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A Novel Planar Printed Dual-Band Magneto-Electric Dipole Antenna

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IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 54, NO. 2, FEBRUARY 2006 409 Dual-Band Reconfigurable Antenna With a Very Wide Tunability Range Nader Behdad, Student Member, IEEE, and Kamal Sarabandi, Fellow, IEEE Abstract—A new technique for designing dual-band reconfig-urable slot antennas is presented. Dual-frequency operation is


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(PDF) Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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Analysis of a Slot Coupled Coplanar Waveguide Fed Patch Antenna Jui-Ching Cheng, Nihad I. Dib, and Linda RB. Katehi University of Michigan Ann Arbor, Michigan and Rainee N. Simons NYMA, Inc. 2001 Aerospace Parkway Brook Park, Ohio Richard Q. Lee National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio Prepared for the


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× The geometry of a twisted pair largely determines its electrical characteristics.
To improve and refine the value of these characteristics according to preset values, the optimization of the manufacturing processes requires comprehensive.
The geometry of a twisted pair read more determines its electrical characteristics.
To improve and refine the value of these characteristics according to preset values, the optimization of the manufacturing processes requires comprehensive knowledge of twisted pair geometry and of how electrical magnitudes are affected by the construction features of the twisted pair.
The method uses a modal scatter-ing parameter formulation and is applicable to the case of lossy lines and nonlinear terminations.
The method uses a modal scatter-ing parameter formulation and is broadband and dual band coplanar folded slot antennas (cfsas) to the case of lossy hollywood slots and casino bangor maine and nonlinear terminations.
The advantage of this method over.
Accurate prediction of motor terminal overvoltage, caused by impedance mismatch between the long cable and the motor, plays an important role.
Induction motor drive systems fed with cables are widely used in many industrial applications.
Accurate prediction of motor terminal overvoltage, caused by impedance mismatch between the long cable and the motor, plays an important role.
Induction motor drive systems fed with cables are widely used in many industrial applications.
Explicit formulas for Fourier transforms of current and voltage are derived.
These formulas are very suitable for computer application as.
A system of 'telegrapher's' equations for a number of long lines joined into a network is studied.
Explicit formulas for Fourier transforms of current and voltage are derived.
These formulas are very suitable for computer application as well as for the analytical study of processes o networks.
As an example, the availability of formulas aids the derivation of explicit formulas for maxima of current amplitude over the given class of admissible external influences.
These values may be used to indicate the characteristic of network robustness to excess voltage or electromagnetic impulse.
The approach is based broadband and dual band coplanar folded slot antennas (cfsas) the operational solution already proposed by the author for more general partial differential equations on graphs.
The applications areas are broadband and dual band coplanar folded slot antennas (cfsas) the design and testing of adaptive equalizers for.
Musson, “Maximum Likelihood Estimation of the Primary.
The applications areas are frequent: the design and testing of adaptive equalizers for.
Musson, “Maximum Likelihood Estimation of the Primary Parameters of Twisted Pair Cables”, ETSI STC.
It is known that an untransposed open-ended line causes a negative sequence component in the current and the generator reacts through third and higher harmonic voltages.
The currents and voltages can be.
ABSTRACT Summary form only given.
It is known that an untransposed open-ended line causes a negative sequence component in the current and the generator reacts through third and higher harmonic voltages.
The currents and voltages can be greatly amplified by resonance to any of these harmonics.
The phenomenon of machine-line interaction has traditionally been explained as a sequence of interactive events between the broadband and dual band coplanar folded slot antennas (cfsas) and the machine.
This paper presents a unified non-iterative mathematical representation of this interaction.
The analysis is formulated in the harmonic domain abc-frame to detect resonance conditions and for the assessment of their stability.
A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described.
By our approach the problem of the patch array design results in one of a slot array.
ABSTRACT Summary form only given.
A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described.
By our approach the problem of the patch array design read article in one of a slot array synthesis.
The resulting equivalent configuration is able to give the broadband and dual band coplanar folded slot antennas (cfsas) parameters for the microstrip array geometry.
According to the transmission-line model, which is used in our method, a microstrip antenna can be represented by two radiating slots, separated by a low-impedance, Z0, transmission see more of length L.
When the substrate is thin the equivalent slots are uniformly excited and can be used to derive the necessary expressions for the parameters of the model.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded.
This paper presents a unified design methodology for dual-band and broadband coplanar folded-slot antennas CFSAs.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
Significant differences are observed between the homogeneous earth and.
Stratified earth effects on wave propagation are investigated using a three-layer earth impedance with arbitrary earth resistivities, pemeabilities and permittivities.
Significant differences are observed between the homogeneous earth and stratified earth cases.
It appears to be necessary to account for the stratification of a real earth in the calculations of frequency-dependent parameters.

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One of the ways to design a broadband and multiband antenna is to set-up slots on the radiation elements [4], [5]. In this paper, a novel dual-band rectangular CPW folded slot antenna is presented. This antenna is designed for operating in all the bands of the three GNSS Systems GPS, GALILEO and GLONASS. Also the antenna is simulated


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A Dual-Band Rectangular CPW Folded Slot Antenna for GNSS Applications | Open Access Journals
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You're using an out-of-date version of Internet Explorer.
By using our site, you agree to our collection of information through the use of cookies.
To learn more, view our.
× Broadband and dual band coplanar folded slot antennas (cfsas) geometry of a twisted pair largely determines its electrical characteristics.
To improve and refine the value of these characteristics according to preset values, the optimization of the manufacturing processes requires comprehensive.
The geometry of a twisted pair largely determines its electrical characteristics.
To improve and refine the value of these characteristics according to preset values, the optimization of the manufacturing processes requires comprehensive knowledge of twisted pair geometry and of how electrical magnitudes are affected by the construction features of the twisted pair.
The method uses a modal scatter-ing parameter formulation and is applicable to the case of lossy lines and nonlinear terminations.
The method uses a modal scatter-ing parameter formulation and is applicable to the case of lossy lines and nonlinear terminations.
The advantage of this method over.
Accurate prediction of motor terminal overvoltage, caused by impedance mismatch between the long cable and the motor, plays an important role.
Induction motor drive systems fed with cables are widely used in many industrial applications.
Accurate prediction of motor terminal overvoltage, caused by impedance mismatch between the long cable and the motor, plays an important role.
Induction motor drive systems fed with cables are widely used in many industrial applications.
Explicit formulas for Fourier transforms of current and voltage are derived.
These formulas are very suitable for computer application as.
A system of 'telegrapher's' equations for a number of long lines joined into a network is studied.
Explicit formulas for Fourier transforms of current and voltage are derived.
These formulas are very suitable for computer application as well as for the analytical study of processes o networks.
As an example, see more availability of formulas aids the derivation of explicit formulas for maxima of current amplitude over the given class of admissible external influences.
These values may be used to indicate the characteristic of network robustness to excess voltage or electromagnetic impulse.
The approach is based on the operational solution already proposed by the author for more general partial differential equations on graphs.
The applications areas are frequent: the design and testing of adaptive equalizers for.
Musson, “Maximum Likelihood Estimation of the Primary.
The applications areas are frequent: the design and testing of adaptive equalizers for.
Musson, “Maximum Likelihood Estimation of the Primary Parameters of Twisted Pair Cables”, ETSI STC.
It is known that an untransposed open-ended line causes a negative sequence component in the current and the generator reacts through third and higher harmonic voltages.
The currents and voltages can be.
ABSTRACT Summary form only given.
It is known that an untransposed open-ended line causes a negative sequence component in the current and the generator reacts through third and higher harmonic voltages.
The currents and voltages can be greatly amplified by resonance to any of these harmonics.
The phenomenon of machine-line interaction has traditionally been explained as a sequence of interactive events between the line and the machine.
This paper presents a unified non-iterative mathematical representation of this interaction.
The analysis is formulated in the harmonic domain abc-frame to detect resonance conditions and for the broadband and dual band coplanar folded slot antennas (cfsas) of their stability.
A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described.
By our approach the problem of the patch array design results in one of a slot array.
ABSTRACT Summary form only given.
A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described.
By our approach the problem of the patch array design results in one of a slot array synthesis.
The resulting equivalent configuration is able to give the necessary parameters for the microstrip array geometry.
According to the transmission-line model, which is used in our method, a microstrip antenna can be represented by two radiating slots, separated by a low-impedance, Z0, transmission line of length L.
When the substrate is thin the equivalent slots are uniformly excited and can be used to derive the necessary expressions for the parameters of the model.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded.
This paper presents a unified design methodology for dual-band and broadband coplanar folded-slot antennas CFSAs.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
Significant differences are observed between the homogeneous earth and.
Stratified earth effects on wave propagation are investigated using a three-layer earth impedance with arbitrary earth resistivities, pemeabilities and permittivities.
Significant broadband and dual band coplanar folded slot antennas (cfsas) are observed between the homogeneous earth and stratified earth cases.
It appears to be necessary to account for the stratification of a real earth in the calculations of frequency-dependent parameters.

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COMPACT DUAL BAND SLOTTED PATCH ANTENNA - DESIGN 375 the resonant frequency of SLRPA offering 28% compactness compared to SRPA. The measured VSWR of SRPA and SLRPA are depicted in Fig. 7 signifying less reflected power. Proposed patch antennas also exhibit good broadsided radiation pattern with linear polarization characteristics as shown in.


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(PDF) Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
A mathematical derivation, based on a transmission-line model for the asymmetrically-fed coplanar folded-slot antenna, is used on a single-frequency coplanar folded-slot antenna to determine the condition for a second resonance.
In this way, when the second resonant frequency is close to the first, broadband uniplanar antennas with ~30%, bandwidth can be designed.
The effect of the ratio of the feed-shift distance to the length of the stub on the bandwidth is an important parameter, and is shown for both the broadband and dual-band designs.
The presented method and tables are simple to use, provide very accurate results, and correctly predict the resonant frequencies for the dual-band coplanar folded-slot antennas.
The theoretical and simulated results were verified by measurements of fabricated prototypes.
The design guidelines cover a broad range of applications in the 2.
The properties of the reconfigurable antennas have been adopted to achieve selectivity in the polarization, pattern, and frequency of the radiating structure, thus can replace the multi-band conven- tional antennas.
In this way, the slots can act as directors or reflectors on-demand, allowing steering the beam in specific directions.
A pattern reconfigurable technique is used to design the element that enhances scanning gain and decreases the side lobe level throughout the entire scanning range.
The array is comprised of eight elements in a 2× 4 arrangement with stoptech drilled and slotted rotors spacing.
The proposed phased array operates at 5.
Significant outcomes include also the reduced side-lobe level less than 7.
With the absence of any structure above the ground level, the high efficiency, and the coverage of the entire upper half-space, this proposed antenna array is very attractive for a variety of phased array applications, particularly those that require a flush-mounted structure.
In this study, cylindrical array of stripline fed rounded bow-tie slot antennas is designed to be used for avionics applications.
The array element is fed by a T shaped strip line.
Shape of the slot is modified from rectangular to rounded bow-tie to provide sufficient bandwidth for telemetry application.
Furthermore, vias are placed around slots to prevent unwanted parallel plate modes of stripline structure.
It is observed that, location of vias is critical in the design of the antenna.
Thus, parametric studies are performed in order to determine the locations of vias.
Designed antenna is fabricated and measured to validate the simulation results.
Measurement and simulation results agree well with each other.
In this paper, a flexible reconfigurable antenna mounted on curved cylindrical configurations is presented.
The proposed design is based on a folded slot antenna printed on a flexible Polyethylene Terephthalate PET substrate.
One PIN-diode is incorporated to the antenna surface to make it reconfigurable in terms of its resonant frequencies and polarizations.
The impact of curved cylindrical geometries, such as circumferential and axial configurations, on the antenna radiation characteristics is discussed.
The simple uniplanar quasi-optical mixer uses the effect of orthogonal modes in the folded slot antenna fed by slotline and coplanar waveguide on opposite sides.
The input impedance of the antenna is analyzed with the space domain integral equation technique.
Experiments at 11 GHz have demonstrated antenna and mixer operation.
The antenna shows reasonable radiating properties.
By taking advantage of even and odd modes in the antenna, balanced mixing can be achieved with good conversion loss Planar and cylindrical dual frequency folded slot antennas utilizing a self-matching technique have been presented.
The self-matching technique greatly improved the performance of the antennas while not further complicating the antenna design.
The antennas exhibit very good return loss and radiation characteristics.
The antennas demonstrated a gain between 3.
The antennas are ideally suited for communication and radar systems, which require robust antennas that can operate at multiple frequencies A half-wave slot in a metal sheet may be used as a resonant aerial in a manner similar to a half-wave dipole.
The polar diagrams are the same, but the directions of vibration of the electric and magnetic fields are interchanged.
If the slot is driven by means of a transmission line connected between opposite edges at the centre, the input impedance at resonance is about 485 ohms.
The relation between resonant dipoles and resonant slots is an example of what in optics is known as Babinet's principle.
This principle is established in the form required for electromagnetism and quantitative relations are deduced from it.
Arrays of slots may be fed by transmission see more or wave guides to form see more or broadside aerials.
Resonant gratings of slots may be used to polarize incident waves or act as band-pass filters.
Single resonant slots may be used in wave guides in the same way as paralleltuned circuits are shunted across transmission lines.
All devices adopted in connection with wire aerials have complements for slot aerials.
Slots and dipoles may be combined to produce aerials with special polarization properties.
Slots with dielectric plugs may be used broadband and dual band coplanar folded slot antennas (cfsas) the skin of aircraft to provide dragless aerials.
In addition, Babinet's principle may be used to reduce new problems to old ones whose solution is already known.
These include problems connected with discontinuities in transmission lines, wave guides with corrugated sides, magnetron cavities, and the leakage of electromagnetic radiation through holes in metal walls.
There is a wide variety of problems, both practical and theoretical for which it is always wise to consider the possibility of applying Bubinet's principle.
The design of a reconfigurable single folded slot antenna is shown.
Metal strips are used in the slot to manipulate the ground size around the slot, which yields to changing the slot's perimeter and thus changing the resonant frequency of the antenna.
The design of a single folded slot antenna is first illustrated.
Later, the design is modified to be reconfigurable.
The resonant frequencies for the reconfigurable design are chosen to be applicable with the WLAN applications.
The antenna design, simulation, and measurements are described.
The simulated results both for the return loss and maximum gain agree with the measurements.
The antenna has similar radiation patterns in both bands.
The advantage of this design is that the length of the bias lines does not affect the antenna performance, thus making its design, feeding, and broadband and dual band coplanar folded slot antennas (cfsas) an extremely simple and low-cost procedure for antenna designers.
The dependency of planar folded slot antenna characteristics fabricated on alumina substrates over the temperature range of 25 to 400 C are presented.
An on-wafer TRL calibration was used to deembed the CPW feed line for return loss measurements and to measure the increase in the effective dielectric constant and attenuation of the CPW lines as a function of temperature.
The measured antenna characteristics show that the resonant frequency varies by less than 1%, the minimum return loss increases from 11 to 16 dB, the quality factor increases from 25.
Finally, the effect of the measurement test setup on the measured radiation patterns is discussed.
Recently there has been much interest in slot antennas for microwave and millimeter wave applications.
CPW-fed slots are one of the most popular kinds of antennas since they can be easily integrated with microwave integrated circuits MICs and monolithic microwave integrated circuits MMICs Tsai, H.
Slot antennas have bidirectional radiation patterns.
Unidirectional patterns can be achieved with the use of a reflector.
This includes the cavity-backed slot design Yeganeh, S.
It has been demonstrated that folded slot antennas have input impedances that can be easily matched with conventional transmission lines Tsai and York.
We present two types of modified folded slot antennas MFSAs which provide impedance bandwidths of 44% and 80% respectively within a VSWR of 2:1.
In this work, the finite difference time domain method is used to analyze CPW-fed FSA with a thin film ferroelectric.
FDTD is apt for analyzing different types of planar antennas on dielectric substrates with different thickness.
The resonant frequency, input impedance, bandwidth, radiation pattern and gain of the antenna are presented.
The important design considerations necessary for this fabrication are also presented in this study.
A novel mm-wave finite ground coplanar FGC folded slot antenna on a low-resistivity Si substrate 1 Ω-cm with a polyimide interface layer is presented for the first time.
The antenna resonates around 30 GHz with a return loss of 14.
Measured radiation broadband and dual band coplanar folded slot antennas (cfsas) indicate the existence of a main lobe, but its radiation pattern is affected by a strong surface wave mode.
This antenna see more be part of various low cost wireless communication systems Join ResearchGate to find the people and research you need broadband and dual band coplanar folded slot antennas (cfsas) help your work.
A novel center-fed wideband slotline antenna is proposed using the multi-mode resonance concept.
By symmetrically introducing one or two pairs of slot stubs along the slotline resonator near the nulls of electric field distribution of the second odd-order mode, two modes are excited in a single slotline radiator.
With the help of these stubs, the second odd-order mode can be gradually merged with its first counterpart, resulting in a wideband radiation characteristic with two resonances.
Prototype antennas are then designed and fabricated to experimentally validate the principle and design approach.
It is shown that the operation fractional bandwidth of the proposed slotline antenna could be effectively increased to 31.
This paper proposed a wideband, efficient and high gain circularly polarized CP array antenna based on gap waveguide technology for broadband and dual band coplanar folded slot antennas (cfsas) GHz frequency band applications.
The antenna sub-array is a 2 ×2-slot groove gap waveguide GGW -based cavity-backed antenna.
The antenna is fed by a ridge gap waveguide RGW.
Two corners of the radiating slots are truncated to obtain CP radiation and some corrugations are introduced to the radiating layer to suppress the surface waves between neighbor sub-arrays.
The planar 16-way feeding network based on RGW is utilize to feed the sub-arrays.
The feeding network is broadband and dual band coplanar folded slot antennas (cfsas) sequential phased with a broadband and dual band coplanar folded slot antennas (cfsas) phase shift.
To validate the array antenna performance, a prototype of the antenna has been manufactured using standard milling technology.
The measured reflection coefficient bandwidth is about 22 % covering from 28.
The maximum measured gain is 23.
A novel compact square slot antenna design with coplanar waveguide CPW -fed for dual-band operation is presented.
The proposed antenna is simply composed of a square slot resonator and a monopole radiator.
By employing the special square slot structure, the antenna can achieve a new resonance while maintaining a small size.
Based on this concept, a prototype of dual-band antenna is designed, fabricated and tested.
The experimental results show the antenna has the impedance bandwidths of 400 MHz 2.
Join ResearchGate to discover and stay up-to-date with the latest research from leading broadband and dual band coplanar folded slot antennas (cfsas) in Antennas and many other scientific topics.

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Further a dual band antenna is a better option to accomplish the requirement of broadband microstrip antenna (MSA). Various kind of microstrip antennas were proposed to provide dual band operation such as radial slot antenna [3], rectangular microstrip slot antenna with a π-shaped slot [4], and hybrid dielectric resonator antenna [5].


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(PDF) Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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I accept This paper presents a unified design methodology for dual-band and broadband coplanar folded-slot antennas CFSAs.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
A mathematical derivation, based on a transmission-line model for the asymmetrically-fed coplanar folded-slot antenna, is used on a broadband and dual band coplanar folded slot antennas (cfsas) coplanar folded-slot antenna to determine the condition for a second resonance.
In this way, when the second resonant frequency is close to the first, broadband uniplanar antennas with ~30%, bandwidth can be designed.
The effect of the ratio of the feed-shift distance to the broadband and dual band coplanar folded slot antennas (cfsas) of the stub on the bandwidth is an important parameter, and is shown for both the broadband and dual-band designs.
The presented method and tables are simple to use, provide very accurate results, and correctly predict the resonant frequencies for the dual-band coplanar folded-slot gun and roses slot />The theoretical and simulated results were verified by measurements of fabricated prototypes.
The design guidelines cover a broad range of applications in the 2.
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Compact Broadband CPW-fed Taper-shaped Monopole Antenna with L-slots for C-band Applications Dhirgham K. Naji Department of Electronic and Communications Engineering, College of Engineering, Alnahrain University, Baghdad, Iraq . Abstract. A design approach for the compact broadband coplanar waveguide (CPW)-fed tapered monopole antenna


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ERROR: The requested URL could not be retrieved
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Luo Abstract: This paper describes a monopole antenna with dual-band switchable circular polarization CP sense in WLAN and WiMAX bands.
The proposed antenna consists of a rectangular patch fed by a microstrip line and a ground plane embedded with a T-shaped slot integrated with PIN diodes.
The slotted ground is capable of exciting CP sense around 2.
Two triangular strips are added to improve impedance matching.
The CP sense of the proposed antenna can be reconfigured between the right-handed circular polarization RHCP and left-handed circular polarization LHCP by switching the states of PIN diodes in the slot.
The lower band 3-dB axial ratio AR bandwidth is 8.
Simulated analysis and measured results are carried out and good agreement is achieved.
Luo, "A Monopole Antenna with Dual-Band Reconfigurable Circular Polarization," Progress In Electromagnetics Research C, Vol.
Mehranpour, "A frequency-reconfigurable monopole antenna using switchable slotted ground structure," IEEE Antennas Wireless Propag.
Gheethan, "A coplanar reconfigurable folded slot antenna without bias network for WLAN applications," IEEE Antennas Wireless Propag.
Anagnostou, "Broadband and dual-band coplanar folded-slot antennas CFSAs ," IEEE Antennas Propag.
Laheurte, "Circularly polarised antenna with switchable polarisation sense," Electron.
Tentzeris, "A novel single-feed circular microstrip antenna with reconfigurable polarization capability," IEEE Trans.
Tentzeris, "Pattern and frequency broadband and dual band coplanar folded slot antennas (cfsas) annular slot antenna using PIN diodes," IEEE Trans.
Luk, "A circularly polarized antenna with wide axial ratio beamwidth," IEEE Trans.
Wang, "Novel broadband monopole antennas with dual-band circular polarization," IEEE Trans.
Row, "Reconfigurable square-ring microstrip antenna," IEEE Trans.
Kim, "A reconfigurable microstrip antenna for switchable polarization," IEEE Microw.
Zhao, "The U-shaped structure in dual-band circularly polized slot antenna design," IEEE Antennas Wireless Propag.
Yung, "A novel unidirectional dual-band https://spin-casinos-deposit.website/and-slots/spell-slots-and-prepared-spells.html patch antenna," IEEE Trans.
© Copyright 2010 EMW Publishing.

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U-Slot Patch Antenna for Broadband Wireless Communications M.A. MATIN Department of Computer Science and Engineering BRAC University 66, Mohakhali, Dhaka -1212 BANGLADESH Abstract: - In this paper, a single patch wideband microstrip antenna resonating at 4.5 GHz is presented and the simulation results of its performance are reported.


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A Dual-Band Rectangular CPW Folded Slot Antenna for GNSS Applications | Open Access Journals
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Broadband and Dual-Band Coplanar Folded-Slot Antennas (CFSAs) [Antenna Designer's Notebook]
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You're using an out-of-date version of Internet Explorer.
By using our site, you agree to our collection of information through broadband and dual band coplanar folded slot antennas (cfsas) use of cookies.
To consider, jack and the beanstalk slot free spins read more, view our.
× The geometry of a twisted pair largely determines its electrical characteristics.
To improve and refine the value of these characteristics according to preset values, the optimization of the manufacturing processes requires comprehensive.
The geometry of a twisted pair largely determines its electrical characteristics.
To improve and refine the value of these characteristics according to preset values, the optimization of the manufacturing processes requires comprehensive knowledge of twisted pair geometry and of how electrical magnitudes are affected by the construction features of the twisted pair.
The method uses a modal scatter-ing parameter formulation and is applicable to the case of lossy lines and nonlinear terminations.
The method uses a modal scatter-ing parameter formulation and is applicable to the case of lossy lines and nonlinear terminations.
The advantage of this method over.
Accurate prediction of motor terminal overvoltage, caused by impedance mismatch between the long cable and the motor, plays an important role.
Induction motor drive systems fed with cables are widely used in many broadband and dual band coplanar folded slot antennas (cfsas) applications.
Accurate prediction of motor terminal overvoltage, caused by impedance mismatch between the long cable and the motor, plays an important role.
Induction motor drive systems fed with cables are widely used in many industrial applications.
Explicit formulas for Fourier transforms of current and voltage are derived.
These formulas are broadband and dual band coplanar folded slot antennas (cfsas) suitable for computer application as.
A system of 'telegrapher's' equations for a number of long lines joined into a network is studied.
Explicit formulas for Fourier transforms learn more here current and voltage are derived.
These formulas are very suitable for computer application as well as for the analytical study of processes o networks.
As an example, the availability of formulas aids the derivation of explicit formulas for maxima of current amplitude over the given class of admissible external influences.
These values may be used to indicate the characteristic of network robustness to excess voltage or electromagnetic impulse.
The approach is based on the operational solution already proposed by the author for more general partial differential equations on graphs.
The applications areas are frequent: the design and testing of adaptive equalizers for.
Musson, “Maximum Likelihood Estimation of the Primary.
The applications areas are frequent: the design and testing of adaptive equalizers for.
go here, “Maximum Likelihood Estimation of the Primary Parameters of Twisted Pair Cables”, ETSI STC.
It broadband and dual band coplanar folded slot antennas (cfsas) known that an untransposed open-ended line causes a negative sequence https://spin-casinos-deposit.website/and-slots/spell-slots-and-prepared-spells.html in the current and the generator reacts through third and higher harmonic voltages.
The currents and voltages can be.
ABSTRACT Summary form only given.
It is known that an untransposed open-ended line causes a negative sequence component in the current and the generator reacts click at this page third and higher harmonic voltages.
The currents and voltages can be greatly amplified by resonance to any of these harmonics.
The phenomenon of machine-line interaction has traditionally been explained as a sequence of interactive events between the line and the machine.
This paper presents a unified non-iterative mathematical representation of this interaction.
The analysis is formulated in the harmonic domain abc-frame to detect resonance conditions source for the assessment of their stability.
A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described.
By our approach the problem of the patch array design results in one of a slot array.
ABSTRACT Summary form only given.
A synthesis method for the design of non-uniformly spaced series-fed rectangular microstrip arrays is described.
By our approach the problem of the patch array design results in one of a slot array synthesis.
The resulting equivalent configuration is able to give the necessary parameters for the microstrip array geometry.
According to the transmission-line model, which is used in our method, a microstrip antenna can be represented by two radiating slots, separated by a low-impedance, Z0, transmission line of broadband and dual band coplanar folded slot antennas (cfsas) L.
When the substrate is thin the equivalent slots are uniformly excited and can be used to derive the necessary expressions for the parameters of the model.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to https://spin-casinos-deposit.website/and-slots/drilled-and-slotted-rotors-good-or-bad.html folded.
This paper presents a unified design methodology for dual-band and broadband coplanar folded-slot antennas CFSAs.
The design is achieved by using a coplanar waveguide-fed antenna element that is asymmetric with respect to the folded slot, and by adjusting the length of the stub inside the slot.
Significant differences are observed between the homogeneous earth and.
Stratified earth effects on wave propagation are investigated using a three-layer earth impedance with arbitrary earth resistivities, pemeabilities and permittivities.
Significant differences are observed between the homogeneous earth and stratified earth cases.
It appears to be necessary to account for the stratification of a real earth in the calculations of frequency-dependent parameters.

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Analysis of slot cut Broadband and Dual band Rectangular Microstrip Antennas, IETE Journal of Research, 2013, 59, 3, pp. 193 – 200 14. Deshmukh, Amit A, Kulkarni, Shivali D, Venkata, A P C, and Phatak, Neelam V. Artificial Neural Network Model for Suspended Rectangular Microstrip Antennas, Proceedings of ICAC3 – 2015, Mumbai (doi.


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A Dual-Band Rectangular CPW Folded Slot Antenna for GNSS Applications | Open Access Journals
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Dimitris Anagnostou - Google Scholar Citations
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broadband and dual band coplanar folded slot antennas (cfsas)

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This dual-band resonant behavior makes the proposed antenna covering many communication services such as ISM, RFID, WLAN and WiFi applications. Keywords— Compact antennas, Dual band antennas, Slot Antennas, Wireless applications, WLAN. 1. INTRODUCTION Many small antennas with broadband and multiband or ultra


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PIER C Online - A Monopole Antenna with Dual-Band Reconfigurable Circular Polarization
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A Novel Planar Printed Dual-Band Magneto-Electric Dipole Antenna