A Highly Reconfigurable Coupler with Tunable Frequency, Phase Difference and Coupling Coefficient Based on Circular Patch

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Author(s)

Related Research Unit(s)

Detail(s)

Original languageEnglish
Title of host publication2020 Asia-Pacific Microwave Conference, APMC 2020 - Proceeding
PublisherIEEE
Pages1033-1035
ISBN (Electronic)978-1-7281-6962-0
Publication statusPublished - Dec 2020

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2020-December

Conference

Title2020 Asia-Pacific Microwave Conference (APMC 2020)
LocationVirtual
PlaceHong Kong
Period8 - 11 December 2020

Abstract

Most reconfigurable couplers proposed before can only tune single characteristic, thus restricting its application. To address this deficiency, a coupler with simultaneously tunable frequency, phase difference and coupling coefficient is proposed based on a single circular patch. According to the analysis of the circular patch, a cross-shaped slot with different lengths is introduced at the center of the patch to control the coupling coefficient. To realize the reconfigurability, two pairs of varactor diodes are placed at the four feeding lines for frequency and phase difference tunabilities. While another two pairs of varactors are loaded at the four ends of the slot to tune the coupling coefficient. For demonstration, the coupler is designed, fabricated and measured. Good agreement between measured and simulated results verify that the proposed coupler can realize tunable frequency from 1.3 to 1.9 GHz, tunable phase difference from 50° to 130°, and tunable coupling coefficient from 3 to 10 dB at 1.3, 1.5 and 1.7 GHz.

Research Area(s)

  • circular patch, reconfigurable coupler, tunable coupling coefficient, tunable frequency, tunable phase difference

Citation Format(s)

A Highly Reconfigurable Coupler with Tunable Frequency, Phase Difference and Coupling Coefficient Based on Circular Patch. / PAN, Yu Fei; CHAN, Wing Shing; ZHENG, Shaoyong.

2020 Asia-Pacific Microwave Conference, APMC 2020 - Proceeding. IEEE, 2020. p. 1033-1035 9331573 (Asia-Pacific Microwave Conference Proceedings, APMC; Vol. 2020-December).

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review