Realization of Quasi-elliptic Quadruplets with a Single Type of Coupling

Chun Hung Lin, Shao Chan Tang, Jen Tsai Kuo, Lin Kun Wu, Philip A. Williams

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


A phase reversal scheme for changing the polarities of so-called electric and magnetic couplings between distributed resonators is explored. It demonstrates that the phase reversal can be achieved by shifting the excitation to the symmetric point of an open-ended half-wave resonator without altering the coupling geometry. Based on this technique, the polarities of conventional electric and magnetic couplings can be easily toggled. Two quasi-elliptic microstrip quadruplets are synthesized, fabricated and measured for demonstration.

Original languageEnglish
Title of host publication2022 Asia-Pacific Microwave Conference, APMC 2022 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9784902339567
StatePublished - 2022
Event2022 Asia-Pacific Microwave Conference, APMC 2022 - Yokohama, Japan
Duration: 29 Nov 20222 Dec 2022

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


Conference2022 Asia-Pacific Microwave Conference, APMC 2022


  • Coupling coefficient
  • cross couping
  • phase reversal
  • quadruplet
  • transmission zero


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