Compact four-band diplexer using defected ground structures-Reference-Cited by-同舟云学术

Compact four-band diplexer using defected ground structures

Published:2021-04-19 Issue:0 Volume:0 Page:
ISSN:2191-6349
Container-title:Frequenz
language:en
Short-container-title:

Author:

Li Liang¹,Chen Jianzhong¹,Chen Yuanbao²

Affiliation:

1. School of Electronic Engineering , Xidian University , Xi’an , Shaanxi , 710071 , P. R. China

2. Wuhan Second Ship Design and Research Institute , Wuhan , Hubei , 430064 , P. R. China

Abstract

Abstract In this paper, a novel four-band diplexer using defected ground structures with compact size, low insertion loss and high isolation is presented. To begin with, there are 16 defected ground stepped impedance resonators (DSIRs) controlling four passbands characteristics. Every four DSIRs can generate one passband. Then, four different DSIRs use the same feeding line. According to the group delay, we can determine the relative physical position of the first resonator. For the demonstration, a four-band diplexer operating at 2.45/4.2 and 3.5/5.2 GHz with the fractional bandwidths of 10, 7, 6.2 and 5% is designed and fabricated. Finally, measured results agree well with simulated results.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering

Link

https://www.degruyter.com/document/doi/10.1515/freq-2020-0131/pdf

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