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Broad band circularly polarized square slot array antenna with improved sequentially rotated feed network for C-band application

Published online by Cambridge University Press:  16 December 2015

Puria Bairami  and
Mahdi Zavvari
Puria Bairami
Affiliation:
Department of Electrical Engineering, Urmia branch, Islamic Azad University, Urmia, Iran
Mahdi Zavvari*
Affiliation:
Department of Electrical Engineering, Urmia branch, Islamic Azad University, Urmia, Iran
*
Corresponding author: M. Zavvari Email: [email protected]
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Abstract

In this paper, an array antenna with asymmetric antenna fed network is presented. Total size of the proposed array antenna (with 2 × 2 elements) is 90 × 90 mm2 and distance between elements (fed by fed) is λ0/2 (λ0 = wavelength in free space). The proposed antenna is fed by coaxial cable that isolated input impedance from impedance of the array antenna feed network. The measured impedance bandwidth of the coaxial fed circular polarization array (S11 < −10 dB) is 47.9% from 4.6 to 7.5 GHz (1.63:1), and the measured 3-dB axial-ratio bandwidth is 42% from 4.7 to 7.2 GHz. The peak gain of antenna is 9.1 dBic.

Keywords

Planar antennaSlot antennaArray antennaCircularly polarizedFeed network
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 1 , February 2017 , pp. 171 - 175
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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