Dual frequency circularly-polarised proximity-fedmicrostrip antenna

Hoorfar, Ahmad; Girard, Gaétan; Perrotta, A.

doi:10.1049/el:19990577

Cited by 6 publications

(4 citation statements)

References 2 publications

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“…Comparing the obtained results with previous dual-band microstrip antennas with circular polarization referenced in the introduction part, it can be verified that our measured reflection coefficient presents a wider bandwidth than [1], and is similar to [3,4] where feeding networks were also used. On the other hand, the measured gain and axial ratio as a function of frequency is very similar to the gain and axial ratio presented in [3,4].…”

Section: Resultssupporting

confidence: 79%

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Circularly-Polarized Stacked Annular-Ring Microstrip Antenna

Ramírez¹,

Parrón²

2011

PIER Letters

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Abstract-In this paper, we propose the aperture feeding as a technique for bandwidth enhancement of multi-band microstrip ring antennas. In particular, we present a dual-band stacked annularring microstrip antenna fed by four bow-tie apertures with circular polarization. Furthermore, we show that the size and shape of the substrate that supports the radiating elements of the antenna plays an important role in the quality of the axial ratio.

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Section: Resultssupporting

confidence: 79%

“…Circular polarization is usually obtained either using a single feeding point and perturbing the regular structure of the microstrip antenna [1,2], or using two different feeding points with equal amplitudes and 90 • phase shift (without perturbing the regular structure of the antenna) [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Circularly-Polarized Stacked Annular-Ring Microstrip Antenna

Ramírez¹,

Parrón²

2011

PIER Letters

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“…A conventional method of producing circularly polarized (CP) radiations for single-fed proximity-coupled microstrip antennas involves introducing a perturbation segment into the radiating patch. The perturbation segment can be designed by truncating the patch corners, using a nearly square patch [2] or embedding a centered cross slot on the patch [3]. In these designs, the two orthogonal resonant modes of the microstrip antenna are excited in parallel and have the same amplitude and 90°phase difference at the CP operating frequency.…”

Section: Introductionmentioning

confidence: 99%

Circularly polarized proximity-coupled microstrip antennas

Lee

Chen

Row

2005

Microw. Opt. Technol. Lett.

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A novel design for the production of circularly polarized radiation (CP) in proximity‐fed microstrip antennas is presented. To achieve this circular‐polarization design, the two orthogonal modes of the microstrip antenna are excited in series through the proximity coupling of an L‐shaped open microstrip line. The experimental results show that the 3‐dB axial‐ratio CP bandwidth of the proposed design is increased by more than 30%, as compared to a conventional CP microstrip antenna of the same size. The details of the simulated and experimental results for the proposed design are presented and discussed. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 429–430, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21006

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“…Dual-frequency operating microstrip antennas find wide applications in GPS, regional mobile satellite arrays, large feed arrays for offset reflectors, and other common transmit and receive antennas [1,21. A compact dual-band dual-polarization microstrip patch antenna capable of generating-two distinct frequencies with different polarizations recently has MICROWAVE AND OPT been reported [3].…”

Section: Introductionmentioning

confidence: 99%