Fabrication of circulator with coplanar wave guide structure

K. Oshiro, H. Mikami, S. Fujii, T. Tanaka, H. Fujimori, M. Matsuura, S. Yamamoto

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


A circulator with a coplanar wave-guide structure, whose external form is rectangular, was designed and analyzed by using a three-dimensional finite-element method. In this analysis, the nonreciprocal transmission characteristics with an insertion loss of 1.0 dB and an isolation of 33 dB appeared at around 7 GHz. The bandwidth defined as the band with isolation of over 20 dB was 50 MHz. A circulator was fabricated based on the design, and the transmission characteristic of the circulator was measured. The fabricated circulator showed an insertion loss of 4.9 dB and an isolation of 28 dB at around 8 GHz. The bandwidth at isolation over 20 dB was 70 MHz.

Original languageEnglish
Pages (from-to)3550-3552
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
Publication statusPublished - Oct 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Fabrication of circulator with coplanar wave guide structure'. Together they form a unique fingerprint.

Cite this