Small spiral-loaded antenna

H Nakano, H Mimaki, M Sugama, J Yamauchi, Kazuhide Hirose

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Recently, we have analyzed a spirally-wound antenna [1][2] proposed by Fenwick using the method of moments. The analysis shows that the. input impedance is very low (less than 4 ohms). It is also shown that the frequency bandwidth is very narrow (less than 0.2% for a criterion of VSWR = 2 to an input resistance at resonance). In this paper, we realize higher input resistance over a wider frequency band than the Fenwick's antenna. For this, a relatively small spiral-loaded antenna, proposed in Fig. 1, is analyzed. The radiation characteristics are presented and discussed.
Original languageEnglish
Title of host publication1998 Symposium on Antenna Technology and Applied Electromagnetics
PublisherPubl by IEEE
ISBN (Print)978-0-9692563-6-6
Publication statusPublished - 1998 Aug
Event1998 Symposium on Antenna Technology and Applied Electromagnetics - Ottawa, ON, Canada, Ottawa, Canada
Duration: 1998 Aug 91998 Aug 12


Conference1998 Symposium on Antenna Technology and Applied Electromagnetics


  • Wires
  • Spirals
  • Antenna radiation patterns
  • Bandwith
  • Junctions

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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