Hairpin bandpass filter with extended upper stopband | Zendy

Mondal Priyanka | Zendy; Chakrabarty Ajay | Zendy

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Hairpin bandpass filter with extended upper stopband

Author(s) -

Mondal Priyanka,

Chakrabarty Ajay

Publication year - 2007

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.22468

Subject(s) - stopband , electronic filter topology , band pass filter , elliptic filter , filter (signal processing) , voltage controlled filter , harmonic , band stop filter , m derived filter , microwave , transition band , prototype filter , electronic engineering , materials science , physics , topology (electrical circuits) , low pass filter , engineering , acoustics , electrical engineering , telecommunications

In this article, a novel feed line for harmonic suppression of a slot line hairpin bandpass filter (BPF) is presented. A T‐shaped microstrip feed line is proposed for excitation of the filter. This feeding structure produces frequency‐dependent external coupling that is used for filter upper stopband extension. A fabricated three‐pole filter having centre frequency (f 0 ) of 904 MHz shows 29 dB upper stopband at least up to 6.6f 0 , while implementing area of the filter is less than 0.65λ g × 0.31λ g , λ g being the guided wavelength at f 0 . © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1463–1464, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22468

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