Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas

Koichi Gyoda; Takashi Ohira

Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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 language	English
Title of host publication	IEEE Antennas and Propagation Society International Symposium
Subtitle of host publication	Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000
Pages	922-925
Number of pages	4
Publication status	Published - 2000 Dec 1
Externally published	Yes

Publication series

Name	IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Volume	2
ISSN (Print)	0272-4693

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 International Symposium: Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000 (pp. 922-925). (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest); Vol. 2).

Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. / Gyoda, Koichi; Ohira, Takashi.
IEEE Antennas and Propagation Society International Symposium: Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000. 2000. p. 922-925 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest); Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Gyoda, K & Ohira, T 2000, Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. in IEEE Antennas and Propagation Society International Symposium: Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000. 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 International Symposium: Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000. 2000. p. 922-925. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

Gyoda, Koichi ; Ohira, Takashi. / Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas. IEEE Antennas and Propagation Society International Symposium: Transmitting Waves of Progress to the Next Millennium, Held in Conjunction with: USNC/URSI National Radio Science Meeting, AP-S/URSI 2000. 2000. pp. 922-925 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

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Design of Electronically Steerable Passive Array Radiator (ESPAR) antennas

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