Optimal Antenna Matching and Mutual Coupling Effect of Antenna Array in MIMO Receiver(Antennas and Propagation)

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概要

• 論文の詳細を見る

• Antenna array is essential factor for multiple- input multiple-output (MIMO) wireless systems. Since the antenna array is composed of closely spaced elements, the mutual coupling among the elements cannot be ignored for the best performance of the array. Mutual coupling affects the MIMO channel, so the performance of a MIMO system, including channel capacity and diversity, varies with the degree of mutual coupling. The effect of mutual coupling is a function of the antenna load impedance. Therefore, designing an optimal element-matched array for a MIMO system requires consideration of the optimal matching condition for the array elements, the one that maximizes the channel capacity. We evaluated the effects of mutual coupling with various matching conditions in dipole arrays, and investigated their effects on the path correlation and channel capacity of MIMO systems. Simulation showed that the conventional conjugate matching of each element is still suitable for closely spaced elements except when the separation is about less than 0.1λ. Theoretical consideration of the received power of a closely-spaced-element array is also provided to show the effects of mutual coupling.

• 社団法人電子情報通信学会の論文
• 2007-04-01

著者

• Yamaguchi Yoshio

  Faculty of Engineering, Niigata University

• YAMADA Hiroyoshi

  Faculty of Engineering, Niigata University

• OGAWA Yasutaka

  Graduate School of Engineering, Hokkaido University

• Yamaguchi Yoshio

  Faculty Of Engineering Niigata University

• Yamada Hiroyoshi

  Faculty Of Engineering Niigata University

• Yajima Yuki

  Faculty Of Engineering Niigata University

• Ogawa Yasutaka

  Graduate School Of Information Science & Technology Hokkaido University

• Ogawa Yasutaka

  Graduate School Of Engineering Hokkaido University

• IURA Hiroki

  Graduate School of Science & Technology, Niigata University

• Iura Hiroki

  Graduate School Of Science & Technology Niigata University

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