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Circularly polarized high-power antenna with higher-order mode excitation

Published online by Cambridge University Press:  16 April 2021

Swati Varun Yadav Open the ORCID record for Swati Varun Yadav [Opens in a new window]  and
Ashish Chittora Open the ORCID record for Ashish Chittora [Opens in a new window]
Swati Varun Yadav*
Affiliation:
Electrical and Electronics Engineering Department, BITS Pilani, K K Birla Goa Campus, Goa403726, India
Ashish Chittora
Affiliation:
Electrical and Electronics Engineering Department, BITS Pilani, K K Birla Goa Campus, Goa403726, India
*
Author for correspondence: Swati Varun Yadav, E-mail: [email protected]
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Abstract

A circularly polarized high-power antenna with higher-order mode excitation (TM01) is presented in this paper. The proposed structure consists of metal plates placed on the conical horn antenna's aperture for achieving TM01 to circular polarized TE11 mode conversion at the output. The structure is simulated on CST Microwave Studio. The designed antenna exhibits high gain and a directive radiation pattern. The axial ratio of the proposed structure is below 3 dB. The simulated and measured reflection coefficient for TM01 mode excitation is below −10 dB over a frequency range of 2.95–3.13 GHz. The structure is purely metallic, and the calculated high-power microwave (HPM) capability is up to the MW level. The proposed antenna is helpful for portable HPM systems.

Keywords

High power antennacircular polarizationhigher mode excitationmode conversion
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 4 , May 2022 , pp. 477 - 481
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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