送受信アレーアンテナにおける最大指向性利得の可逆性について  [in Japanese] Study on the reciprocity for the maximum directive gains of a transmitting array and a receiving array  [in Japanese]

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Author(s)

    • 鹿子嶋 憲一 KAGOSHIMA Kenichi
    • 茨城大学工学部メディア通信工学科 Department of Media and Telecommunications Engineering, The College of Engineering, Ibaraki University
    • 尾保手 茂樹 OBOTE Shigeki
    • 茨城大学工学部メディア通信工学科 Department of Media and Telecommunications Engineering, The College of Engineering, Ibaraki University

Abstract

アンテナの利得,指向性は,一般に送信時と受信時で可逆性が成り立ち等しくなると言われている.この性質を使えば,要求特性を送信アレーアンテナとしては設計しにくくても,受信アレーでは設計がしやすければ,受信で設計し送信に変換すればよい.受信アレーではアダプティブアンテナのSINR最大アルゴリズムは確立した技術となっており,素子間相互結合がある場合も重み係数を求めることができる.これを利用し,送信アレーのヌル条件付き利得最大設計を試みた.その結果,従来のSINR最大アルゴリズムを直接には適用できず,(1)各素子負荷は素子間相互結合を考慮した整合負荷とすること,(2)電圧合成は,複素整合負荷をインピーダンス変換器により一度すべての素子で等しい負荷値に変換後合成すべきこと,が必要であることを明らかにした.

It is generally recognized that directive gains and patterns of a transmitting antenna and a receiving antenna are equal due to the reciprocal relationship between them. Utilizing this relationship, for example, a difficult synthesis problem on the transmitting array can be achieved by the synthesis on the receiving array, if it is easy. As for the receiving array, the adaptive antenna algorithm for the maximum SINR has been established and a solution for the case with mutual couplings between elements has been attained. We tried the synthesis of the transmitting array with a maximum directive gain under the condition of nulls at some directions. As a results, we found that an existing algorithm for the maximum SINR could not directly be used, but that a matched load impedance should be used at each antenna element terminal and that voltages across load impedances should be summed after the load impedances are transformed into the ones with same value.

Journal

  • IEICE technical report

    IEICE technical report 106(13), 39-44, 2006-04-13

    The Institute of Electronics, Information and Communication Engineers

References:  13

Cited by:  1

Codes

  • NII Article ID (NAID)
    110004719480
  • NII NACSIS-CAT ID (NCID)
    AN10060764
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09135685
  • NDL Article ID
    7901622
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJP  CJPref  NDL  NII-ELS 
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