An asymmetrical suspended stripline directional coupler

Moriyasu Miyazaki*, Yoji Isota, Norio Takeuchi, Osami Ishida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


For a directional coupler using a low-loss suspended stripline, the structure of an asymmetrical suspended directional coupler with medium coupling of -5 dB to -9 dB is proposed and the design method and characteristic of the coupler are discussed. By using an asymmetric suspended stripline in the coupled section, medium coupling, which is difficult to achieve with a branched stripline directional coupler for tight coupling and an edge-coupled stripline directional coupler for weak coupling, can be realized. This type of coupler is advantageous for the supply circuit of a phased-array antenna using suspended striplines.

Original languageEnglish
Pages (from-to)58-63
Number of pages6
JournalElectronics and Communications in Japan, Part II: Electronics (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number12
Publication statusPublished - 1998 Dec
Externally publishedYes


  • Asymmetrical structure
  • Directional coupler
  • Finite element method
  • Suspended stripline

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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