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Bandpass filters with mixed hairpin and patch resonators

Bandpass filters with mixed hairpin and patch resonators

Ogbodo, Eugene, Wang, Yi and Rapajic, Predrag (2015) Bandpass filters with mixed hairpin and patch resonators. Progress In Electromagnetics Research C, 59. pp. 101-106. ISSN 1937-8718 (Print), 1937-8718 (Online) (doi:https://doi.org/10.2528/PIERC15072905)

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Abstract

This paper presents a new implementation technique of transmission zeros in an in-line coupled filter. Neither cross couplings between non-adjacent resonators nor separate side-line resonators have been used. Instead a mixture of single-mode hairpin resonators and dual-mode patch resonators have been adopted in a bandpass filter with one asymmetric transmission zero. The introduction of the patch led to an improved frequency selectivity through an independently controllable transmission zero. This approach has been verified by a three-pole filter at 2.6 GHz with 8% bandwidth and a transmission zero at 2.4 GHz. Good agreement has been shown between the measurements and the simulation.

Item Type: Article
Uncontrolled Keywords: Bandpass Filter, patch resonators, transmission zero
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 03 Jan 2017 15:36
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/13936

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