Single-feed circularly polarized microstrip antenna with a slit

Hsu, Wen-Hsiu; Wu, Chun-Kun

doi:10.1002/(sici)1098-2760(199807)18:4<306::aid-mop17>3.0.co;2-1

Cited by 26 publications

(18 citation statements)

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“…CP can be excited in a patch by generating two equal orthogonal modes with quadrature phase shift. The technique to generate CP by creating perturbation in the patch is demonstrated in References . But the antennas using the perturbation technique suffer low AR BW (< 2%).…”

Section: Introductionmentioning

confidence: 99%

A wideband dual‐circularly polarized 2 × 1 array antenna using multi‐layer substrate for compact structure

Rahman

Nishiyama

Toyoda

2019

Micro & Optical Tech Letters

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A novel compact dual‐circularly polarized (CP) 2 × 1 microstrip array antenna with wideband characteristic is proposed. The antenna is realized using multi‐layer technique. The antenna consists of two orthogonally fed patch elements integrated with a 90° branch‐line coupler for achieving dual‐CP operation. The complete feed network, inspired by double‐sided MIC technology, is designed using microstrip lines and slot lines distributed in different three metal layers. ±90° out‐of‐phase signals caused by the branch‐line coupler are combined with two orthogonal feed lines of the patches to excite right‐hand circular polarization (RHCP) or left‐hand circular polarization (LHCP). More than 40% size reduction is achieved by employing multilayer structure instead of single‐layer structure. The measured 3‐dB axial ratio bandwidths of RHCP/LHCP are 8.31/10.19%. Peak gain is more than 9 dBic with good CP radiation performance. The antenna performance is validated by measured data.

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Section: Introductionmentioning

confidence: 99%

A wideband dual‐circularly polarized 2 × 1 array antenna using multi‐layer substrate for compact structure

Rahman

Nishiyama

Toyoda

2019

Micro & Optical Tech Letters

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“…1,2 In past two decades, several size reduction methods have been reported for achieving the compact printed antenna structures. [3][4][5][6] Some commonly developed techniques are: embedding/loading slots in to the radiating patches, 4,7-10 embedding slits and spur lines on to the antenna patches, 11,12 use of radiating patches with multilayered or stacked substrates or folded patch structures, 13 by the use substrates offering high relative permittivity to be applied for supporting the radiating patches, 14,15 by the insertion of shorting pins and posts 16 and by defecting ground plane structure through integration or removal of several structures. 5,6,17,18 Modified ground plane/DGS is also one of the most significant techniques for achieving antenna compactness either in terms of size or resonant frequency.…”

Section: Introductionmentioning

confidence: 99%

Compact broadband circularly polarized Hook-shaped microstrip antenna with DGS plane

Kumar

Gangwar

Kanaujia

2018

Int J RF Microw Comput Aided Eng

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A new antenna structure comprises of defected ground structure with hook‐shaped radiating patch designed for broad impedance bandwidth and axial ratio bandwidth is presented. In the proposed design, hook shaped radiating patch is orthogonally connected with printed strip patch and excited with 50Ω feed line at the upper side of the substrate. At the bottom side, a small rectangular slit is removed from the ground plane just underneath of radiating patch for better impedance matching along with broader bandwidth. The ground plane is defected by etching 3 symmetrical narrow slots for antenna compactness. The optimized antenna prototype is simulated, fabricated, and experimentally tested for far field and axial ratio performances in anechoic chamber. The measured results clearly show that it can yield an impedance bandwidth of approximately 27.60% centered at 2.17 GHz frequency and a 3‐dB AR bandwidth of approximately 25.20%. The measured gain range from 3 to 4.3 dBic in entire 3‐dB AR bandwidth with maximum gain of 4.30 dBic. The cross polar suppression was witnessed better than 15 dB along with wide beamwidth of 85°

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“…Thus, great interest in various printed slot antennas can be seen in the literature. In recent years, some microstrip-line-fed printed slot antennas [1]- [5] have been reported because of their favorable impedance characteristics. In the reported literature [5], a printed slot antenna with a fork-like tuning stub has been shown to have a good bandwidth enhancement.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, some microstrip-line-fed printed slot antennas [1]- [5] have been reported because of their favorable impedance characteristics. In the reported literature [5], a printed slot antenna with a fork-like tuning stub has been shown to have a good bandwidth enhancement. However, the structure of microstrip feed line used in [5] makes the configuration of the slot antenna more complicated.…”

Section: Introductionmentioning

confidence: 99%

“…In the reported literature [5], a printed slot antenna with a fork-like tuning stub has been shown to have a good bandwidth enhancement. However, the structure of microstrip feed line used in [5] makes the configuration of the slot antenna more complicated. Another printed microstrip-line-fed slot antenna with a simple rotated slot for a wider bandwidth has also been studied in [6].…”

Section: Introductionmentioning

confidence: 99%

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Microstrip-Fed Circularly Polarized Square-Ring Patch Antenna for GPS Applications

Chen

Wang

Lin

et al. 2009

IEEE Trans. Antennas Propagat.

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A novel coupling technique for circularly polarized squarering patch antenna is developed and discussed. The circular polarization (CP) radiation of the square-ring patch antenna is achieved by a simple microstrip feed line through the coupling of a square patch on the same plane of the antenna. Proper positioning of the coupling square patch excites two orthogonal resonant modes with 90 phase difference, and a pure circular polarization is obtained. The dielectric material is a square block of ceramic with a permittivity of 58 and that reduces the size of the antenna. The prototype has been designed, fabricated and found to have an impedance bandwidth of 1.1% and a 3-dB axial-ratio bandwidth of about 0.03% at GPS frequency of 1573 MHz. The characteristics of the proposed antenna have been studied by simulation software HFSS and experiments. The measured and simulated results are in good agreement. Index Terms-Ceramic dielectric material, circular polarization (CP), global position system (GPS), square-ring patch antenna.

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Single-feed circularly polarized microstrip antenna with a slit

Cited by 26 publications

References 0 publications

A wideband dual‐circularly polarized 2 × 1 array antenna using multi‐layer substrate for compact structure

A wideband dual‐circularly polarized 2 × 1 array antenna using multi‐layer substrate for compact structure

Compact broadband circularly polarized Hook-shaped microstrip antenna with DGS plane

Microstrip-Fed Circularly Polarized Square-Ring Patch Antenna for GPS Applications

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