Broadband planar magic-T with Marchand type power divider and balun

Po Jung Chou, Pei Chieh Lin, Yun Wei Lin, Jhe Ching Lu, Chi-Yang Chang

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

2 Scopus citations

Abstract

A new broadband high-order planar magic-T is proposed in this paper. The magic-T is formed by Marchand type power divider and balun. Exact synthesis method based on S-domain highpass prototype using Richard's theorem fits the magic-T with the user-defined specifications. By discussing the characteristic impedance of the common element shared by the balun and divider, the magic-T can be designed to match different output impedance. A high-order magic-T with wide bandwidth about 100% and reflection coefficient of -15dB is designed as an example where a combination of microstrip lines, slotlines, double-sided parallel-strip line (DSPSL) and coplanar striplines is applied. The simulation and measurement results are matched well.

Original languageEnglish
Title of host publication2014 Asia-Pacific Microwave Conference Proceedings, APMC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages94-96
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

  • Highpass prototype
  • Impedance-transformation
  • Magic-T
  • Planar structure
  • Synthesis

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