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Multi-coupled resonator microwave diplexer with high isolation

Multi-coupled resonator microwave diplexer with high isolation

Nwajana, Augustine O. ORCID: 0000-0001-6591-5269 and Yeo, Kenneth S. K. (2017) Multi-coupled resonator microwave diplexer with high isolation. In: 2016 46th European Microwave Conference (EuMC). IEEE, pp. 1167-1170. ISBN 978-2874870439 (doi:https://doi.org/10.1109/EuMC.2016.7824556)

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Abstract

A microwave diplexer achieved by coupling a dual-band bandpass filter onto two single-bands (transmit, Tx and receive, Rx) bandpass filters is presented. This design eliminates the need for employing external junctions in diplexer design, as opposed to the conventional design approach which requires separate junctions for energy distribution. A 10-pole (10th order) diplexer has been successfully designed, simulated, fabricated and measured. The diplexer is composed of 2 poles from the dual-band filter, 4 poles from the Tx bandpass filter, and the remaining 4 poles from the Rx bandpass filter. The design was implemented using asynchronously tuned microstrip square open-loop resonators. The simulation and measurement results show that an isolation of 50 dB is achieved between the diplexer Tx and Rx bands. The minimum insertion loss is 2.88 dB for the transmit band, and 2.95 dB for the receive band.

Item Type: Conference Proceedings
Title of Proceedings: 2016 46th European Microwave Conference (EuMC)
Uncontrolled Keywords: microwave, filter, diplexer, resonator
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Future Technology and the Internet of Things
Faculty of Engineering & Science > School of Engineering (ENN)
Last Modified: 24 Oct 2019 13:58
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/25809

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