Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas

Koichi Gyoda, Takashi Ohira

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

108 Citations (Scopus)

Abstract

Electronically Steerable Passive Array Radiator (ESPAR) antennas are proposed for low-cost analog adaptive beamforming. The configuration and design of these antennas and some simulation results, especially on their beam/null steering capability, are presented. From the results of a numerical analysis, it was found that 5-element ESPAR antennas can offer a beam gain of 9dBi ± 1dB and a null deeper than -50dBi in an arbitrary direction. In this case, the beam gain and null were obtained separately. It was also found that 7-element ESPAR antennas can achieve continuous steering in almost all directions, with a simultaneous 8dBi beam gain and -30dBi null, excluding the region where the direction of the beam and the direction of the null are within about 45-degrees however 5-element ESPAR antennas are unable to achieve steering in a number of directions, even with a simultaneous 5dBi beam gain and -15dBi null.

Original languageEnglish
Title of host publicationIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Pages922-925
Number of pages4
Volume2
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Radiators
Antennas
Beamforming
Numerical analysis
Costs

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Gyoda, K., & Ohira, T. (2000). Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. In IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) (Vol. 2, pp. 922-925)

Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. / Gyoda, Koichi; Ohira, Takashi.

IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). Vol. 2 2000. p. 922-925.

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

Gyoda, K & Ohira, T 2000, Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. in IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). vol. 2, pp. 922-925.
Gyoda K, Ohira T. Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. In IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). Vol. 2. 2000. p. 922-925
Gyoda, Koichi ; Ohira, Takashi. / Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest). Vol. 2 2000. pp. 922-925
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