Sector-mode beamforming of a 2.4-GHz electronically steerable passive array radiator antenna for a wireless ad hoc network

Author

Cheng, Jun ; Hashiguchi, Masaya ; Iigusa, Kyouichi ; Ohira, Takashi

Author_Institution

ATR Adaptive Commun. Res. Labs., Kyoto, Japan

Volume

1

fYear

2002

fDate

2002

Firstpage

122

Abstract

An electronically steerable passive array radiator (ESPAR) antenna features a simple hardware structure, which enables the use of adaptive array techniques in user terminals, especially in an ad hoc network. We propose the sector-mode beamforming of a 2.4-GHz ESPAR antenna. A single source power maximization technique is presented to find a control voltage vector of the antenna that provides a sector-pattern toward the source direction. Experiments in a radio anechoic chamber give 12 bias voltage vectors and, correspondingly, 12 sector-patterns at every 30°.

Keywords

ad hoc networks; adaptive antenna arrays; antenna radiation patterns; array signal processing; beam steering; mobile antennas; optimisation; 2.4 GHz; ESPAR antenna; adaptive array; control voltage vector; electronically steerable passive array radiator; radio anechoic chamber; sector pattern; sector-mode beamforming; single source power maximization; source direction; user terminals; wireless ad hoc network; Ad hoc networks; Adaptive arrays; Anechoic chambers; Antenna arrays; Array signal processing; Convergence; Directive antennas; Feeds; Mobile ad hoc networks; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2002. IEEE

Print_ISBN

0-7803-7330-8

Type

conf

DOI

10.1109/APS.2002.1016265

Filename

1016265