科研之友
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摘要
The numerical method of the volume-surface integral equation has been used to model the electromagnetic excitation and propagation problems of the wave-guide-fed aperture antenna. The mode-matching method has been used to describe the impedance marching situation at the exciting aperture. The excitation conditions were established based on the expansion of the waveguide modes and the equality principle of electromagnetics. The multi-level fast multi-pole algorithm is applied to speed up the matrix-vector multiplication and reduce the memory requirement of the method of moment. The numerical solutions of the electromagnetic transmission and radiation of an offset paraboloidal reflector antenna have been given. It has been demonstrated that the method proposed by this article is able to provide the valid and accurate numerical solution for the electromagnetic propagation and radiation problems of an aperture antenna with an arbitrary shape, composite metallic and material structure, and electrically large size.
- 出版日期2012
- 单位北京应用物理与计算数学研究所; 电子科技大学
