A low-loss serial power combiner using novel suspended stripline couplers

Yukihiro Tahara*, Hideyuki Oh-Hashi, Kazuyuki Totani, Moriyasu Miyazaki, Sei Ichi Saito, Osami Ishida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A low-loss serial power combiner using suspended stripline is described. It consists of novel broadside-coupled directional couplers which have shunt capacitances at the edges of the coupled sections. These additional shunt capacitances compensate for poor directivities of the couplers because of inhomogeneous dielectric in suspended stripline structure. The fabricated three-way power combiner has achieved good performance with insertion loss less than 0.23 dB over a bandwidth of 10% in 2 GHz band.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalIEICE Transactions on Electronics
Issue number1
Publication statusPublished - 2005 Jan
Externally publishedYes


  • Directional coupler
  • Power combiner
  • Suspended stripline

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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