A comb-line antenna modified for wideband circular polarization

Kazuhide Hirose, Keita Shinozaki, Hisamatsu Nakano

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


A sequential rotation technique is newly applied to a circularly polarized (CP) comb-line antenna. The antenna is analyzed using the moment method. First, a novel loop antenna is proposed as a CP radiation element. Next, the loop element is used for a comb-line antenna to radiate a CP wave. This reference antenna shows a bandwidth of 3% for a 3-dB axial-ratio criterion. Last, the comb-line antenna is modified for wideband CP radiation. It is both numerically and experimentally revealed that the CP wave bandwidth is wider than that of the reference antenna by a factor of five.

Original languageEnglish
Article number7017540
Pages (from-to)1113-1116
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 2015


  • Circular polarization
  • Comb-line antenna
  • Loop antenna

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


Dive into the research topics of 'A comb-line antenna modified for wideband circular polarization'. Together they form a unique fingerprint.

Cite this