A 1.1-3.1-GHz tunable quadruplexer with compact size and bandwidth control

Pei-Ling Chi, Yu Wen Chi, Tao Yang

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

Abstract

This paper proposes a varactor-tuned quadruplexer that allows simultaneous control of the center frequency and bandwidth of each channel and independent control on different channels. To achieve compactness, each channel consists of only a dual-mode resonator where the even-and odd-mode resonances contribute to a two-pole response. The fabricated prototype shows that, for the input return loss greater than 10 dB, the available tuning ranges of the channel frequency and the 3-dB bandwidth are 1.1-1.4 GHz and 100-140 MHz, 1.55-1.9 GHz and 120-150 MHz, 2.05-2.4 GHz and 190-240 MHz, and 2.63-3.1 GHz and 240-270 MHz, respectively, for channels 1, 2, 3, and 4. The channel insertion loss is less than 5 dB and isolation is greater than 25 dB for all tuning states. The quadruplexer has a footprint of 0.45λg× 0.25λg, where λgis the guided wavelength at 1.1 GHz.

Original languageEnglish
Title of host publicationProceedings of the 2019 IEEE Asia-Pacific Microwave Conference, APMC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1035-1037
Number of pages3
ISBN (Electronic)9781728135175
DOIs
StatePublished - Dec 2019
Event2019 IEEE Asia-Pacific Microwave Conference, APMC 2019 - Singapore, Singapore
Duration: 10 Dec 201913 Dec 2019

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2019-December

Conference

Conference2019 IEEE Asia-Pacific Microwave Conference, APMC 2019
CountrySingapore
CitySingapore
Period10/12/1913/12/19

Keywords

  • Bandwidth control
  • Compact
  • Dual-mode
  • Frequency agility
  • Multiband
  • Quadruplexer
  • Tunable

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  • Cite this

    Chi, P-L., Chi, Y. W., & Yang, T. (2019). A 1.1-3.1-GHz tunable quadruplexer with compact size and bandwidth control. In Proceedings of the 2019 IEEE Asia-Pacific Microwave Conference, APMC 2019 (pp. 1035-1037). [9038401] (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 2019-December). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APMC46564.2019.9038401