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Low-insertion-loss Gysel power combiner with high power density and high isolation

Published online by Cambridge University Press:  08 April 2021

Song Guo Open the ORCID record for Song Guo [Opens in a new window] ,
Kaijun Song  and
Yong Fan
Song Guo
Affiliation:
EHF Key Lab of Fundamental Science, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
Kaijun Song*
Affiliation:
EHF Key Lab of Fundamental Science, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
Yong Fan
Affiliation:
EHF Key Lab of Fundamental Science, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu611731, China
*
Author for correspondence: Kaijun Song, E-mail: [email protected]
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Abstract

A suspended-stripline Gysel low-insertion-loss power combiner is presented in this paper. The multi-layer cavity structure reduces the circuit size and increases power density, composed of suspended strip lines and coaxial lines. The transmission-line theory is used to analyze this proposed power combiner, and the equivalent circuit model is developed to investigate the characteristics and design of the power combiner. The measured input return loss is greater than 20 dB from 7.15 to 9.35 GHz. The measured insertion loss is less than 0.36 dB, and the power-combining efficiency is greater than 92% from 7.39 to 9.19 GHz. The maximum power-combining efficiency is 98.8% at 8.1 GHz. Besides, the measured isolation is greater than 20 dB from 7 to 10 GHz. The power capacity is analyzed, and the cross-sectional power density is greater than 3.57 kW/cm2. The measured and simulated results show reasonable agreement with each other.

Keywords

High isolationhigh power densitylow insertion losspower combinersuspended stripline
Type
Passive Components and Circuits
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 4 , May 2022 , pp. 426 - 431
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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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