Performance Evaluation for RF-Combining Diversity Antenna Configured with Variable Capacitors(<Special Section>Advanced RF Technologies for Compact Wireless Equipment and Mobile Phones)
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概要
- 論文の詳細を見る
An RF adaptive array antenna (RF-AAA) configured with variable capacitors is proposed. This antenna system can control the power combining ratio and phase value of received signals. In this paper, we focus on the diversity effects of RF-AAA. First, we show the design methodology of the combiner circuit to realize the effective combining. Second, the perturbation method and the steepest gradient method are compared for the optimization algorithms to provide fast convergence and suboptimum solutions among the variable circuit constants. Finally, in simulation, we show the RF-AAA can achieve diversity antenna gains of 7.7dB, 10.9dB and 12.6dB for 2-branch, 3-branch and 4-branch configuration, respectively, which have higher performance than the selection combining.
- 社団法人電子情報通信学会の論文
- 2006-04-01
著者
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Takada J
Graduate School Of Science And Engineering Tokyo Institute Of Technology
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Takada Jun‐ichi
Tokyo Inst. Of Technol. Tokyo Jpn
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Takada Jun-ichi
Department Of International Development Engineering Graduate School Of Science And Engineering Tokyo
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OISHI Yasuyuki
Fujitsu Laboratories
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Oishi Y
Fujitsu Limited
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Oishi Yasuyuki
Fujitsu Ltd.
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IDA Ichirou
Fujitsu Limited
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TANAKA Hiroya
Department of International Development Engineering, Graduate School of Science and Engineering, Tok
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Tanaka Hiroya
Department Of International Development Engineering Graduate School Of Science And Engineering Tokyo
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Ida Ichirou
Yrp Research & Development Center Fujitsu Limited
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Ida Ichiro
Fujitsu Limited
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