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Compact wide-passband and wide-stopband microstrip bandpass filter using multi-stub resonator

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3 Author(s)
Ming-Ju Tsou ; Department of Electrical Engineering, National Central University, Jhongli, Taoyuan, 32001, Taiwan ; Shih-Wei Chen ; Wen-Hua Tu

This paper presents a wideband microstrip bandpass filter with wide stopband. To achieve the wide stopband, a multi-stub resonator is introduced. The proposed resonator features high design freedom and can provide multiple transmission zeros for good near-passband selectivity and deep stopband rejection. The resonator is investigated via transmission-line model and a bandpass filter is fabricated to validate the design concept, which shows an improved F performance in comparison to previous works.

Published in:

Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International

Date of Conference:

17-22 June 2012