A 1.16-3.89-GHz Tunable Six-Channel Diplexer with Compact Size and High Isolation

Pei-Ling Chi, Ching Kai Chiou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A compact microstrip varactor-based diplexer with six tunable channels is proposed. Each output path contains only two varactor-loaded multi-mode resonators, by which three two-pole passbands/channels can be independently and continuously tuned over a wide bandwidth. Given the input return loss greater than 10 dB and output isolation greater than 26.1 dB, the six channels of the fabricated diplexer can be experimentally tuned in the range of 1.16~1.36, 1.65~1.81, 2.05~2.36, 2.57~2.86, 3~3.52, and 3.3~3.89 GHz, respectively. Measured results agree well with simulated results.

Original languageEnglish
Title of host publication2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5-8
Number of pages4
ISBN (Electronic)9781728113098
DOIs
StatePublished - 1 Jun 2019
Event2019 IEEE MTT-S International Microwave Symposium, IMS 2019 - Boston, United States
Duration: 2 Jun 20197 Jun 2019

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2019-June
ISSN (Print)0149-645X

Conference

Conference2019 IEEE MTT-S International Microwave Symposium, IMS 2019
CountryUnited States
CityBoston
Period2/06/197/06/19

Keywords

  • compact
  • diplexers
  • filters
  • microstrip
  • multi-mode resonators
  • tunable
  • varactor

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    Chi, P-L., & Chiou, C. K. (2019). A 1.16-3.89-GHz Tunable Six-Channel Diplexer with Compact Size and High Isolation. In 2019 IEEE MTT-S International Microwave Symposium, IMS 2019 (pp. 5-8). [8700989] (IEEE MTT-S International Microwave Symposium Digest; Vol. 2019-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/mwsym.2019.8700989