volume | PIER Journals

2020-08-04

A New Compact Microstrip Ultra-Wideband (UWB) Bandstop Filter with Good Performance

Zidong Gao,

Dr. Zidong Gao

Department of Electrical and Computer Engineering

University of Wisconsin

USA

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Peng Wu,

Dr. Peng Wu

Shandong Labor Vocational and Technical College

China

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Yang Zhang

Dr. Yang Zhang

Guangxi Vocational & Technical Institute of Industry

China

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Progress In Electromagnetics Research Letters, Vol. 93, 9-12, 2020

doi:10.2528/PIERL20052304

Abstract

A new compact ultra-wideband (UWB) bandstop ﬁlter with good performance is proposed. The proposed UWB bandstop ﬁlter is composed of two pairs of quarter-wavelength resonators, a high impedance main transmission line, a half-wavelength resonator, and an H-shaped multiple-mode ring resonator. The proposed H-shaped multiple-mode ring resonator is introduced to achieve three transmission poles appearing in the lower and upper passbands thus to improve the characteristics of selectivity. The proposed quarter-wavelength resonators and half-wavelength resonator are used to obtain four transmission poles showing up in stopband thus to improve the in-band suppression characteristics. To validate the design concept, a new compact UWB bandstop ﬁlter with high selectivity and good suppression is designed and fabricated. UWB stopband, low insertion losses, and good selectivity are achieved as demonstrated in both simulation and experiment.

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Zidong Gao, Peng Wu, and Yang Zhang, "A New Compact Microstrip Ultra-Wideband (UWB) Bandstop Filter with Good Performance," Progress In Electromagnetics Research Letters, Vol. 93, 9-12, 2020.
doi:10.2528/PIERL20052304

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