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SIW cavity-backed dual inverted L slot antenna array for Ku band applications

Published online by Cambridge University Press:  07 February 2022

Abhay Kumar Open the ORCID record for Abhay Kumar [Opens in a new window]  and
Shweta Srivastava
Abhay Kumar*
Affiliation:
Department of Electronics and Communication Engineering, Jaypee Institute of Information Technology, Sector 128, Noida, UP, India
Shweta Srivastava
Affiliation:
Department of Electronics and Communication Engineering, Jaypee Institute of Information Technology, Sector 128, Noida, UP, India
*
Author for correspondence: Abhay Kumar, E-mail: abhay.kumar@jiit.ac.in
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Abstract

A novel concept of SIW cavity-backed dual inverted edge curved L slots antenna array with the defective ground plane is proposed in this paper. A linearly placed six-element inverted dual L slots array antenna is designed separated by a distance of 0.55λg to achieve high gain. Each pair of slots is separated by a column of the vias to form sub-cavities and those are fed individually. Defective ground structure (DGS) is introduced at the ground plane to manage the propagation of wave to the last slots in the array. The slots are enclosed by a SIW cavity of height 0.24λg in a single substrate. A measured peak gain of 8 dBi is achieved at 14.29 GHz. The antenna shows a front-to-back ratio of 24.9 dB. The design is also compared with various aspects to show the advantages of each element introduced in the design. The validity of the design is proved by the good agreement between the simulated and measured results. This novel design can be used to achieve the performance requirement of a satellite antenna working in Ku band.

Keywords

SIW cavityL slotantenna arrayKu band
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Special Issue 1: EuCAP 2021 Special Issue , February 2023 , pp. 150 - 155
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Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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