Compact and dual-band arbitrary power-split quadrature coupler using the composite right/left-handed transmission lines

Pei-Ling Chi, Wen Yuan Chang

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

2 Scopus citations

Abstract

In this paper, a dual-band quadrature coupler is proposed for arbitrary power divisions using the composite right/left-handed (CRLH) transmission lines. The presented prototype is based on two identical CRLH transmission lines of 50 ohm and a pair of lumped-element parallel tanks loaded to the CRLH host lines. The power division ratio at either frequency is determined by the electrical length of the 50-μ CRLH lines, which facilitates coupler realization of arbitrary power split, even for a large division ratio. By applying the CRLH lines, the dual operating frequencies as well as the corresponding power split ratios can be arbitrarily designed, which on the contrary is infeasible by microstrip lines. Two coupler prototypes were developed for power division ratios of 10/10 dB and 10/6 dB at 0.9/1.8 GHz. In particular, the first fabricated coupler occupies only 18% footprint of the 0.9-GHz microstrip branch-line coupler. Experimental results are in good agreement with simulation data.

Original languageEnglish
Title of host publication2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages16-18
Number of pages3
ISBN (Electronic)9784902339314
StatePublished - 25 Mar 2014
Event2014 Asia-Pacific Microwave Conference, APMC 2014 - Sendai, Japan
Duration: 4 Nov 20147 Nov 2014

Publication series

Name2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014

Conference

Conference2014 Asia-Pacific Microwave Conference, APMC 2014
CountryJapan
CitySendai
Period4/11/147/11/14

Keywords

  • Composite right/left-handed (CRLH)
  • Dual-band
  • Large power division ratio
  • Quadrature coupler

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    Chi, P-L., & Chang, W. Y. (2014). Compact and dual-band arbitrary power-split quadrature coupler using the composite right/left-handed transmission lines. In 2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014 (pp. 16-18). [7067934] (2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014). Institute of Electrical and Electronics Engineers Inc..