Nwajana, Augustine O. ORCID: 0000-0001-6591-5269, Dainkeh, Amadu and Yeo, Kenneth S.K. (2017) Substrate integrated waveguide (SIW) bandpass filter with novel microstrip-CPW-SIW input coupling. Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 16 (2). pp. 393-402. ISSN 2179-1074 (Online) (doi:https://doi.org/10.1590/2179-10742017v16i2793)

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Abstract

A Substrate integrated waveguide bandpass filter is presented with a novel CPW-to-SIW transition at both the input and output ports which also served as the input and output couplings into the filter. The CPW-to-SIW transition structures presented here exploited the step impedance between the 50 ohms input/output feedline and the transition to control the input/output couplings of the filter. The SIW filter is also shown to have very minimum milling or etching requirement which reduces the fabrication error. The proposed SIW filter has been validated experimentally and results presented. The results show that a simulated return loss of 15 dB and an initial measured return loss of 16 dB were achieved. An improved measured return loss of 22 dB was later achieved after some tuining adjustments were performed on the filter input and output couplings. A minimum insertion loss of 1.3 dB was also achieved across the band.

Item Type:	Article
Uncontrolled Keywords:	bandpass filter, coplanar waveguide (CPW), coupling, substrate integrated waveguide (SIW)
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > Future Technology and the Internet of Things Faculty of Engineering & Science > School of Engineering (ENG)
Related URLs:	Publisher
Last Modified:	19 Sep 2020 00:20
URI:	http://gala.gre.ac.uk/id/eprint/25803

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