Aeronautical low-profile Yagi-Uda antennas

Yujiro Taguchi, Qiang Chen, Kunio Sawaya

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


A low-profile Yagi-Uda antenna composed of a driven inverted-F antenna and two parasitic inverted-L antennas, which is used for the antennas of SSR (secondary surveillance radar) and mounted on an airplane, is proposed. The wire antenna is analyzed by the moment method, while the printed antenna is analyzed by the FD-TD method. The wire-type antenna has Gd/Gr = 18.1 dB, Gd = 8.3 dBi, bandwidth defined by VSWR ≦ 2 is 9.6%, with dimensions of 0.08,λ0 (height) × 0.51 λ0 (length), where Gd and Gr denote the directive gain of director orientation and reflector orientation, respectively. It is also shown that the characteristics of a print-type antenna fabricated on a dielectric substrate (εr = 1.7) are similar to those of a wire-type antenna.

Original languageEnglish
Pages (from-to)28-36
Number of pages9
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Issue number12
Publication statusPublished - 1998 Dec


  • FD-TD method
  • Inverted-F antenna
  • Inverted-L antenna
  • Yagi-Uda antenna

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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