Compact Tunable Balanced Bandpass Filter Using a Folded S-Shaped Slotline Resonator (FSSR)

Xin Tong Zou, Feng Wei, Bo Zhou, Bin Li, Xiao Wei Shi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

A compact tunable balanced bandpass filter (BPF) using a folded s-shaped slotline resonator (FSSR) is proposed in this paper. The FSSR can be approximately viewed as a half-wavelength resonator, which determines the self-resonant frequency. By changing the reverse bias voltage of the varactors loaded on the FSSR, the resonant frequency of the proposed filter can be tuned. The balanced stepped-impedance microstrip-slotline transition structures are adopted to block the common-mode (CM) signals transmission and transfer the differential mode (DM) signals successfully. Therefore, the superior common-mode (CM) suppression can be achieved. To verify the design method, a compact tunable balanced BPF with frequencies ranging from 0.66 GHz to 0.96 GHz is fabricated and measured. A good agreement can be achieved between the results of measurement and simulation.

Original languageEnglish
Title of host publication2018 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538624166
DOIs
Publication statusPublished - 5 Dec 2018
Event10th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2018 - Chengdu, China
Duration: 6 May 20189 May 2018

Publication series

Name2018 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2018 - Proceedings

Conference

Conference10th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2018
Country/TerritoryChina
CityChengdu
Period6/05/189/05/18

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