volume | PIER Journals

Abstract

This paper presents the design and analysis of a wideband circularly polarized resonant cavity antenna (RCA). The antenna structure consists of dual-layer Jerusalem cross type partially reflective surface (PRS) above a two-port wideband circularly polarized patch antenna. The PRS enhances the gain of the feeding patch antenna over wide range of frequencies. The structure provides left hand as well as right hand circular polarizations. Parametric analysis of the structure is also presented. The measured 10 dB return loss bandwidth and 3 dB axial ratio bandwidth of the RCA are 25 % (8.24-10.63 GHz) and 28.8% (8.3 GHz-11.1 GHz), respectively. Isolation more than 10 dB is obtained for the frequency range 9.15-10.61 GHz. Measured results show peak realized gain of 9 dBi in the operating band.

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Dr. Swati Vaid

Dr. Ashok Mittal