New Stochastic Algorithm for Optimization of Both Side Lobes and Grating Lobes in Large Antenna Arrays for MPT
スポンサーリンク
概要
- 論文の詳細を見る
The concept of placing enormous Solar Power Satellite (SPS) systems in space represents one of a handful of new technological options that might provide large scale, environmentally clean base load power to terrestrial markets. Recent advances in space exploration have shown a great need for antennas with high resolution, high gain and low side lobe level (SLL). The last characteristic is of paramount importance especially for the Microwave Power Transmission (MPT) in order to achieve higher transmitting efficiency (TE) and higher beam collection efficiency (BCE). In order to achieve low side lobe levels, statistical methods play an important role. Various interesting properties of a large antenna arrays with randomly, uniformly and combined spacing of elements have been studied, especially the relationship between the required number of elements and their appropriate spacing from one viewpoint and the desired SLL, the aperture dimension, the beamwidth and TE from the other. We propose a new unified approach in searching for reducing SLL by exploiting the interaction of deterministic and stochastic workspaces of proposed algorithms. Our models indicate the side lobe levels in a large area around the main beam and strongly reduce SLL in the entire visible range. A new concept of designing a large antenna array system is proposed. Our theoretic study and simulation results clarify how to deal with the problems of side lobes in designing a large antenna array, which seems to be an important step toward the realization of future SPS/MPT systems.
- （社）電子情報通信学会の論文
- 2008-01-01
著者
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Shinohara Naoki
Laboratory Of Applied Radio Engineering For Humanosphere Rish Kyoto University
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Shinohara N
Kyoto Univ. Uji‐shi Jpn
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Shinohara Naoki
Radio Science Center Of Space And Atmosphere Kyoto University
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Shinohara Naoki
Research Institute For Sustainable Humanosphere Kyoto University
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Matsumoto H
Department Of Electronics And Bioinformatics Science And Technology Meiji University
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BAKI A.
Research Institute for Sustainable Humanosphere (RISH), Kyoto University
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HASHIMOTO Kozo
Research Institute for Sustainable Humanosphere (RISH), Kyoto University
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SHISHKOV Blagovest
Institute of Mathematics and Informatics Bulgarian Academy of Sciences
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MATSUMOTO Hiroshi
Kyoto University
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Baki A.
Research Institute For Sustainable Humanosphere Kyoto University
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Hashimoto Koichi
Research Institute For Sustainable Humanosphere Kyoto University
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Shinohara Naoki
Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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BAKI A.K.M.
Research Institute for Sustainable Humanosphere (RISH), Kyoto University
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