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RADIO SCIENCE, VOL. 39, RS3003, doi:10.1029/2003RS002920, 2004

Efficient analysis of electromagnetic scattering and radiation from patches on finite, arbitrarily curved, grounded substrates

Ning Yuan

Temasek Laboratories, National University of Singapore, Singapore, Republic of Singapore


Tat Soon Yeo

Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Republic of Singapore


Xiao Chun Nie

Temasek Laboratories, National University of Singapore, Singapore, Republic of Singapore


Le Wei Li

Department of Electrical and Computer Engineering, National University of Singapore, Singapore, Republic of Singapore


Yeow Beng Gan

Temasek Laboratories, National University of Singapore, Singapore, Republic of Singapore


Abstract

A precorrected-fast Fourier transform (FFT) accelerated surface integral equation approach formulated using the homogeneous medium Green's function is presented for the analysis of patch arrays on finite, arbitrarily shaped, grounded substrate. The integral equation is solved by the method of moments, and the precorrected-FFT method is applied to reduce the memory requirement and computational complexity of the solution procedure. The memory required for this algorithm is O(N 1.5), and the computational complexity is N iter N 1.5log N, where N is the number of unknowns and N iter is the iteration number. Numerical results are presented to demonstrate the accuracy and capability of the method.

Received 4 June 2003; accepted 26 February 2004; published 11 May 2004.

Keywords: method of moments; precorrected-FFT method; finite patch arrays; curved grounded substrate.

Index Terms: 0604 Electromagnetics: Antenna arrays; 0644 Electromagnetics: Numerical methods; 0669 Electromagnetics: Scattering and diffraction.

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Citation: Yuan, N., T. S. Yeo, X. C. Nie, L. W. Li, and Y. B. Gan (2004), Efficient analysis of electromagnetic scattering and radiation from patches on finite, arbitrarily curved, grounded substrates, Radio Sci., 39, RS3003, doi:10.1029/2003RS002920.