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 / School / Research Centre / Research Group:	Faculty of Engineering & Science > School of Engineering (ENG)
Last Modified:	16 Oct 2019 09:15
URI:	http://gala.gre.ac.uk/id/eprint/13936

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