Analysis of Large-scale Periodic Array Antennas by CG-FFT Combined with Equivalent Sub-array Preconditioner
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概要
- 論文の詳細を見る
This paper presents a fast and accurate analysis of large-scale periodic array antennas by conjugate-gradient fast Fourier transform (CG-FFT) combined with an equivalent sub-array preconditioner. The impedance matrix can be transformed to a structure of Three-level Block Toeplitz Matrices by using of the periodic structure of array antenna. The Three-level Block Toeplitz Matrices are further transformed to Circulant Matrix, whose multiplication with a vector can be fast implemented by one-dimension (1-D) fast Fourier transform (FFT). Thus, the conjugate-gradient fast Fourier transform (CG-FFT) is successfully applied to the analysis of a large-scale periodic dipole array. Furthermore, an equivalent sub-array preconditioner is proposed to combine with the CG-FFT analysis to reduce iterative steps and the whole CPU-time of the iteration. Some numerical results are given to illustrate the high efficiency and accuracy of the present method.
- 社団法人電子情報通信学会の論文
- 2006-04-13
著者
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Yuan Qiaowei
Intelligent Cosmos Research Institute Inc.
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Chen Qiang
Tohoku University
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CHEN Qiang
Department of Electrical Communications Engineering, Graduate School of Engineering, Tohoku Universi
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SAWAYA Kunio
Department of Electrical Communications Engineering, Graduate School of Engineering, Tohoku Universi
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Yuan Qiaowei
Sendai National College of Technology
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Yuan Qiaowei
Intelligent Cosmos Res. Inst. Sendai Jpn
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Chen Qiang
Department Of Electrical Communications School Of Engineering Tohoku University
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Chen Q
Tohoku Univ. Sendai‐shi Jpn
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Chen Qiang
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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Sawaya Kunio
Tohoku Univ.
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Sawaya K
Tohoku Univ. Sendai‐shi Jpn
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Sawaya Kunio
Department Of Electrical And Communication Engineering Graduate School Of Engineering Tohoku Univers
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ZHAI Huiqing
Faculty of Engineering, Tohoku University
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ZHAI Huiqing
Department of Electrical Communications, Faculty of Engineering, Tohoku University
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Chen Qiang
Department Of Cardiovascular Medicine The Second Affiliated Hospital Of Dalian Medical University
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SAWAYA Kunio
Department of Communications Engineering, Graduate School of Engineering, Tohoku University
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