A tri-band mode conversion system for high-power microwave applications

Keqiang Wang; Hao Li; Chen Cai; Yong Luo; Biao Hu; Tianming Li; Haiyang Wang; Yihong Zhou; Chaoxiong He

doi:10.1063/5.0049578

AIP Advances (Apr 2021)

A tri-band mode conversion system for high-power microwave applications

Keqiang Wang,
Hao Li,
Chen Cai,
Yong Luo,
Biao Hu,
Tianming Li,
Haiyang Wang,
Yihong Zhou,
Chaoxiong He

Affiliations

Keqiang Wang: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Hao Li: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Chen Cai: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Yong Luo: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Biao Hu: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Tianming Li: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Haiyang Wang: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Yihong Zhou: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
Chaoxiong He: School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China

DOI: https://doi.org/10.1063/5.0049578
Journal volume & issue: Vol. 11, no. 4
pp. 045318 – 045318-9

Abstract

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To realize multi-band mode conversion in a high-power microwave incoherent power combination system, a tri-band conversion system (at X-, Ku-, and Ka-bands) is proposed in this paper. The tri-band conversion system mainly consists of three parts: a dual-band multiplexer, a circular waveguide with a 90° bend, and a tri-band mode converter. To investigate the mode coupling characteristics in the system, every part is carefully analyzed and verified. Numerical and simulation results show that the final conversion efficiencies of the conversion system are 98.9% [coaxial transverse electromagnetic (TEM) mode–coaxial TE11 mode at 10.16 GHz], 99.1% (coaxial TEM mode–coaxial TE11 mode at 14.45 GHz), and 99.6% (circular TM01–circular TE11 at 30.5 GHz). Meanwhile, its maximum power handling capacities reached 1.5 GW, 957.6 MW, and 726.2 MW. The good agreement between theoretical analyses and simulation results demonstrates that the proposed tri-band system is feasible in high-power microwave applications.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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