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Wideband isolation-improved substrate-integrated waveguide power dividers/combiners

Published online by Cambridge University Press:  04 October 2018

Yong Mao Huang Open the ORCID record for Yong Mao Huang [Opens in a new window] ,
Haiyan Jin ,
Yuliang Zhou ,
Supeng Leng  and
Maurizio Bozzi
Yong Mao Huang*
Affiliation:
School of Electrical and Electronic Information, Xihua University, Chengdu 600039, China
Haiyan Jin
Affiliation:
School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Yuliang Zhou
Affiliation:
School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Supeng Leng
Affiliation:
School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Maurizio Bozzi
Affiliation:
Department of Electrical, Computer, and Biomedical Engineering, University of Pavia, 27100 Pavia, Italy
*
Author for correspondence: Yong Mao Huang, E-mail: [email protected]
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Abstract

In this paper, a 3 dB H-plane substrate-integrated waveguide (SIW) power divider/combiner with improved isolation is reported. By adding two isolated ports into the Y-junction, it will perform like a multi-port coupler, so that the isolation between its dividing ports can be effectively improved as the newly-added ports are properly matched. To verify the availability and effectiveness of this concept, two prototypes, one is terminated by coaxial terminations and the other is loaded with lumped resistors, are developed. Their measured results are separately in good agreement with their corresponding simulations. Meanwhile, isolations better than 16 dB with fractional bandwidth (FBW) of 35 and 25% are achieved, respectively, as well as low phase and amplitude imbalances. Compared with some reported similar SIW power dividers, the proposed ones exhibit wider FBW with similar isolation, insertion loss, phase, and amplitude balance performance.

Keywords

Filterspassive components and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 9 , November 2018 , pp. 1019 - 1027
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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