Fast beamforming of electronically steerable parasitic array radiator antennas: Theory and experiment

被引：163

作者：

Sun, C ^{[1
]}

Hirata, A

Ohira, T

Karmakar, NC

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

[2] ATR, Adv Telecommun Res Inst Int, Adapt Commun Res Labs, Kyoto 6190288, Japan

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 07期

关键词：

ad hoc network; aerial beamforming (ABF); digital beamforming (DBF); electronically steerable parasitic array radiator (ESPAR); simultaneous perturbation stochastic approximation (SPSA); smart antennas; spatial division multiple access (SDMA);

D O I：

10.1109/TAP.2004.831314

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low-power consumption, small-size smart antenna, named electronically steerable parasitic array radiator (ESPAR), has been designed. Beamforming is achieved by tuning the load reactances at parasitic elements surrounding the active central element. A fast beamforming algorithm based on simultaneous perturbation stochastic approximation with a maximum cross correlation coefficient criterion is proposed. The simulation and experimental results validate the algorithm. In an environment where the signal-to-interference-ratio is 0 dB, the algorithm converges within 50 iterations and achieves an output signal-to-interference-plus-noise-ratio of 10 dB. With the fast beamforming ability and its low-power consumption attribute, the ESPAR antenna makes the mass deployment of smart antenna technologies practical.

引用

页码：1819 / 1832

页数：14

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