Compact Quad-Band Bandpass Filter Based on Stub-Loaded Resonators

Virdee, Bal Singh and Farhat, Mohamad and Riaz, Muhammad (2017) Compact Quad-Band Bandpass Filter Based on Stub-Loaded Resonators. In: International Microwave Symposium, 4-9 June 2017, Hawaii.

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Abstract

This paper presents a planar quad-band bandpass filter with high out-of-band rejection. The filter is based on intercoupled stub-loaded resonators, where pairs of resonators are electromagnetically coupled to each other and the feedlines. This results in excitation of passbands, where the first and the third passbands are generated by /4 resonators. The second and the fourth passbands are excited by /2 resonators. The proposed technique provides sufficient degree of freedom to control the center frequency and bandwidth of the four passbands. In addition, the five transmission zeros created around the passbands results in a quad-band filter with high selectivity, sharp 3 dB cut-off frequency, high isolation, and low passband insertion-loss. The proposed technique was verified practically. Design methodology and experimental results of the prototype filter are provided.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: quad-band, stub-loaded resonators, microstrip filter, planer filter
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
Related URLs:
Depositing User: Bal Virdee
Date Deposited: 08 Jan 2018 10:25
Last Modified: 08 Jan 2018 10:25
URI: http://repository.londonmet.ac.uk/id/eprint/1305

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