A Simple Microstrip Bandstop Filter Using Cross-Coupling Stubs | Zendy

Leung Chiu | Zendy; Quan Xue | Zendy

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A Simple Microstrip Bandstop Filter Using Cross-Coupling Stubs

Author(s) -

Leung Chiu,

Quan Xue

Publication year - 2012

Publication title -

international journal of microwave science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.125

H-Index - 11

eISSN - 1687-5834

pISSN - 1687-5826

DOI - 10.1155/2012/473030

Subject(s) - band stop filter , center frequency , stub (electronics) , microstrip , electronic engineering , bandwidth (computing) , multi band device , prototype filter , topology (electrical circuits) , microwave , band pass filter , electrical engineering , computer science , engineering , low pass filter , telecommunications , antenna (radio)

This paper presents an alterative implementation of a shunt open-circuited stub for multilayer microwave circuit. With making use of the proposed implementation, a simple and compact bandstop filter with a district bandstop characteristics and a first spurious at the third harmonic is proposed. The proposed filter exhibits about 12.5% fractional bandwidth of −10 dB signal rejection at the center frequency of 2.04 GHz and flat group delay at the pass bands. Besides, by cascading a number of the proposed bandstop filters designed at the different frequencies, multiband bandstop filters can be easily realized. A dual- (tri-) band design at the center frequencies of 2 GHz and 3 GHz (and 4 GHz) is designed, realized, and measured. The proposed bandstop filter well suits the nowadays multilayer and compact radio frequency integrated circuit design

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