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Radome-covered substrate-integrated cavity-backed patch antenna surrounded by dielectric material

Published online by Cambridge University Press:  25 February 2015

Muhammad Javid Asad  and
Muhammad Farhan Shafique
Muhammad Javid Asad*
Affiliation:
COMSATS Institute of Information Technology, Islamabad, Pakistan
Muhammad Farhan Shafique
Affiliation:
COMSATS Institute of Information Technology, Islamabad, Pakistan
*
Corresponding author:M. Javid Asad Email: mjavid_pk1@yahoo.com
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Abstract

The substrate-integrated cavity-backed patch antenna embedded in dielectric-coated structure is presented. The aperture of antenna is covered with composite radome. The close proximity of radome to antenna severely degrades input impedance matching. The dielectric coating, a thick dielectric material, significantly deteriorates radiation pattern of antenna due to propagation of surface waves in the surrounding dielectric coating. The proposed planar electromagnetic bandgap structure reduces the propagation of surface waves in the dielectric coating recovering deterioration in the radiation pattern of the antenna. The problem of input impedance mismatching of antenna is resolved by placing a metallic strip on the top of the radome. The simulated results are in good agreement with measured results.

Keywords

Cavity-backed antennaComposite radomeDielectric coatingEBG
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 2 , March 2016 , pp. 379 - 384
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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