volume | PIER Journals

2023-09-17

Wideband Circularly Polarized Planar Antenna for X-Band Applications

May Abd Elazeem Abo-Elhassan,

Dr. May Abd Elazeem Abo-Elhassan

Microwave Engineering Department

Electronics Research Institute (ERI)

Egypt

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Asmaa Elsayed Farahat,

Dr. Asmaa Elsayed Farahat

Microwave Engineering Department

Electronics Research Institute

Egypt

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Khalid Fawzy Ahmed Hussein

Professor Khalid Fawzy Ahmed Hussein

Microwave Engineering Department

Electronics Research Institute

Egypt

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Progress In Electromagnetics Research M, Vol. 119, 63-73, 2023

doi:10.2528/PIERM23072401

Abstract

A wide band circularly polarized planar antenna of high radiation efficiency is proposed in the present work for future generations of wireless communications requiring circular polarization in the X-band of the microwave spectrum. The main radiating part of the antenna is a rectangular turn-shaped strip that is capacitively loaded by two corner-shaped parasitic elements. The antenna is fed through coplanar waveguide (CPW) region whose ground structure is defected by etching two rectangular annular slots. The purposes of both the corner-shaped parasitic elements and the rectangular annular slots of the CPW ground plane are to increase the impedance matching and the 3 dB axial ratio (AR) bandwidth, and to enhance the antenna efficiency. The design is achieved through complete parametric study to find the optimum dimensions of the antenna. A prototype of the proposed antenna is fabricated for experimental assessment of its performance. The results obtained by both simulation and experimental measurements show that the impedance matching bandwidth is about 5.3 GHz (8-13.3 GHz); the 3 dB AR bandwidth is about 3.1 GHz (8-11.1 GHz); the maximum gain ranges from 4.5 to 5.5 dBi; and the radiation efficiency is higher than 98% over the operational frequency band.

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May Abd Elazeem Abo-Elhassan, Asmaa Elsayed Farahat, and Khalid Fawzy Ahmed Hussein, "Wideband Circularly Polarized Planar Antenna for X-Band Applications," Progress In Electromagnetics Research M, Vol. 119, 63-73, 2023.
doi:10.2528/PIERM23072401

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