Optimum design of yagi‐uda antenna for millimeter‐wave imaging

Kazuhiro Uehara, Hiroshi Nishimura, Takeshi Yonekura, Ken‐Ichiro ‐I Natsume, Koji Mizuno

Research output: Contribution to journalArticlepeer-review


A millimeter‐wave imaging array is proposed in which many Yagi‐Uda antennas are placed on a dielectric lens. By changing the dimensions of these antennas, the impedance matching with the detector is optimized. At the same time, a radiation pattern matched to the incident beam from the focusing optics is realized. The crosstalk between the adjacent detectors on the array is measured. An optimum spacing is derived and a good imaging property is realized. The present imaging array is suitable for MMIC and is applied in practice for plasma measurement for nuclear fusion research.

Original languageEnglish
Pages (from-to)81-90
Number of pages10
JournalElectronics and Communications in Japan (Part I: Communications)
Issue number4
Publication statusPublished - 1993
Externally publishedYes


  • imaging array
  • Millimeter waves
  • plasma measurement
  • video detection
  • Yagi‐Uda antenna

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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