Compact Low-Profile Circularly Polarized Fabry–Perot Resonator Antenna Fed by Linearly Polarized Microstrip Patch

This article presents a method to design broadband circularly polarized (CP) Fabry‐Perot Resonator (FPR) antenna. The proposed antenna is based on multi‐layer thin dielectric slabs arranged in close proximity as a partially reflecting surface (PRS) and an Archimedean spiral as a CP radiating source. Experimental results show a broadband operation from 6 to 13 GHz, in which the reflection coefficient is less than −10 dB and the axial ratio (AR) is lower than 3 dB. In addition, good radiation patterns and high broadside gain of better than 10.8 dBic are achieved over the operating bandwidth. The proposed antenna can be used for C‐ and X‐band satellite communications.

Section: Introductionmentioning

confidence: 99%

Broadband circularly polarized Fabry‐Perot antenna utilizing Archimedean spiral radiator and multi‐layer partially reflecting surface

Tran

Bui

et al. 2018

“…The multilayered Fabry–Perot cavity for wide axial ratio performance and size miniaturization was demonstrated in Refs. and . However, these configurations have low gain issues due to poor transmittance value of the superstrate elements.…”

Section: Introductionmentioning

confidence: 99%

Metasurface cavity antenna for broadband high‐gain circularly polarized radiation

Swain

Mishra

2018

The article presents a microstrip patch (MSA) fed high gain circularly polarized metasurface cavity (CP‐MSC) antenna using a planar progressively‐phased‐reflector and a transmissive linear to circular polarization conversion metascreen. The bottom metasurface reflector consists of a remodeled Jerusalem cross to obtain 2π reflection phase variation. Linear to circular polarization conversion is achieved by a hexagonal ring based meta‐element with high transmission and bellow 3 dB axial ratio from 9.5 to 10.5 GHz. Simulated and measured results of assembled CP‐MSC antenna with MSA are in good agreement. The gain of the proposed cavity antenna with 10 and 10.5 GHz MSA are 14.9 and 16.3 dBi, respectively. Below 3 dB AR throughout the operating band denotes significant circular polarization performance of the proposed antenna.

“…Fabry‐Pérot cavity antenna (FPCA) is an attractive antenna solution to meet the requirement of beam scanning in the millimeter‐wave band, which has the advantage of low cost, discrete, and lightweight . Some work has been studied to apply FPCA to achieve steering beam . Nevertheless, the size of these antennas are relatively large and they are not suitable for the millimeter‐wave band.…”

Section: Introductionmentioning

confidence: 99%

A beam scanning Fabry–Pérot cavity antenna for millimeter‐wave applications

Lan

Sun

Yan

et al. 2018

A beam scanning Fabry‐Pérot cavity antenna (FPCA) for 28 GHz‐band is presented in this article. The proposed antenna consists of a slot‐fed patch antenna and several layers of perforated superstrates with different dielectric constant. The beam of the antenna can be controlled by moving the superstrate over the antenna. By increasing the offset between the feeding antenna and the superstrate, a larger tilt angle can be obtained. The size of the antenna is 0.95λ0 × 0.95λ0 × 0.48λ0 at 28.5 GHz. The results show the proposed antenna achieves an impedance bandwidth (S11 < ‐10 dB) of 10.5% (27.2‐30.2 GHz), and the beam can be scanned from 0° to 14° in the yoz‐plane with the offset changed from 0 mm to 2 mm. The gain of the antenna is enhanced by 5 dBi in comparison with the feeding antenna without the superstrate, which ranges from 10.91 to 11.53 dBi with the different offset. The proposed antenna is fabricated and shows a good agreement with simulated result.