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Gain enhancement of wideband circularly polarized antenna using FSS

Published online by Cambridge University Press:  29 April 2016

Nagendra Kushwaha  and
Raj Kumar
Nagendra Kushwaha
Affiliation:
Department of Electronics Engineering, DIAT (DU), Pune-411025, India
Raj Kumar*
Affiliation:
Department of Armament Electronics, ARDE, Pune-411021, India
*
Corresponding author:R. Kumar Email: [email protected]
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Abstract

This paper presents a high gain, wideband circularly polarized (CP) antenna. High gain of the antenna is achieved by employing a frequency selective surface (FSS) as a reflector. The antenna is a coplanar waveguide-fed structure with a modified L-shaped radiating patch. The unit element of the FSS is formed by connecting two modified dipoles at an angle of 90°. The antenna with reflector has a measured impedance bandwidth of 74.3% (2.2–4.8 GHz) and a 3-dB axial ratio bandwidth (ARBW) of 62% (2.2–4.18 GHz). The maximum boresight gain of the proposed antenna with reflector is 7.1 dB at 3.4 GHz. The radiation patterns of the antenna with the FSS are also measured and compared with simulated patterns. The various aspects of effect of FSS on CP antenna performance are also discussed.

Keywords

Circular polarization antennaCPW-fed antennaFSSHigh gain antennaReflectorWideband antenna
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 697 - 703
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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