Fundamental study on novel loop-line antennas radiating a circularly polarized wave

Kazuhide Hirose, Tetsuya Shibasaki, Hisamatsu Nakano

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We propose two types of microstrip-line antennas, designated as connected and penetrated loop-line antennas. Each antenna is composed of loops and straight lines and analyzed using the method of moments. It is found that a circularly polarized beam with an axial ratio of 0.1 dB can be formed by shifting the straight lines with respect to the loop centers. Further analysis reveals that local radiation from the straight lines of the penetrated loop-line antenna is remarkably small (-17 dB) in comparison to that (-7 dB) of the connected loop-line antenna.

Original languageEnglish
Article number6193118
Pages (from-to)476-479
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2012


  • Circular polarization
  • Loop antenna arrays
  • Microstrip-line antennas

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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