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A novel dual-band filter based on single-cavity CTSRR-loaded triangular substrate-integrated waveguide

Published online by Cambridge University Press:  22 May 2019

Q. F. Geng ,
H. J. Guo ,
Y. Y. Zhu ,
W. Huang ,
S. S. Deng  and
T. Yang
Q. F. Geng
Affiliation:
Key Laboratory for Organic Electronics and Information Displays, Synergetic Innovation Center for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
H. J. Guo
Affiliation:
Key Laboratory for Organic Electronics and Information Displays, Synergetic Innovation Center for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
Y. Y. Zhu
Affiliation:
National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, Jiangsu, China
W. Huang
Affiliation:
Key Laboratory for Organic Electronics and Information Displays, Synergetic Innovation Center for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing 210023, China Shanxi Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an 710072, China
S. S. Deng
Affiliation:
Key Laboratory for Organic Electronics and Information Displays, Synergetic Innovation Center for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
T. Yang*
Affiliation:
Key Laboratory for Organic Electronics and Information Displays, Synergetic Innovation Center for Organic Electronics and Information Displays, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
*
Author for correspondence: T. Yang, E-mail: iamtyang@njupt.edu.cn
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Abstract

In this paper, a novel single-cavity triangular substrate-integrated waveguide (TSIW) dual-band filter loading a complementary triangular split ring resonator (CTSRR) is proposed, which has three transmission zeros (TZs) in the stopband in total. The dual-band response is achieved by the CTSRR and the degenerate modes of the TSIW cavity. In order to control the TZs, we propose two adjustment techniques, shift feeding technique and adding via perturbation. In addition, the CTSRR etched on the surface can produce a new TZ in the upper first-passband. Finally, a dual-band filter with three TZs is simulated, fabricated, and measured. There is a good agreement between the simulated results and measured ones.

Keywords

Microwave and millimeter-wave devicescircuits and systems
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 9 , November 2019 , pp. 894 - 898
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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