Compact microstrip bandpass filter with two transmission zeros based on λ/8 coupled-line sections

Chao Huang Wu, Yo Shen Lin, Chi Hsueh Wang, Chun Hsiung Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Compact microstrip bandpass filter with two transmission zeros is proposed based on one-eighth wavelength (λ/8) coupled-line sections. The proposed filter occupies only half of the circuit area of conventional parallel coupled-line bandpass filter, and exhibits good stopband rejection with no repeated passband at twice center frequency. By introducing a cross-coupled shunt inductor, two transmission zeros at upper and lower stopbands may be created without increasing the circuit area. The desired locations of transmission zeros can be adjusted by varying the value of cross-coupled inductance. Specifically, a microstrip coupled-line bandpass filter centered at 2.45 GHz with a 3dB bandwidth of 9.6% and two transmission zeros is implemented.

Original languageEnglish
Title of host publication35th European Microwave Conference 2005 - Conference Proceedings
Pages1283-1286
Number of pages4
DOIs
StatePublished - 2005
Event2005 European Microwave Conference - Paris, France
Duration: 4 Oct 20056 Oct 2005

Publication series

Name35th European Microwave Conference 2005 - Conference Proceedings
Volume2

Conference

Conference2005 European Microwave Conference
Country/TerritoryFrance
CityParis
Period4/10/056/10/05

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