Analysis of offset circular reflector antenna with a large aperture by complex source-dual series approach

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI:10.1109/APS.1999.789285

T. Oğuzer

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Abstract

Reflector antennas are very popular part of modern communication systems. Especially, large reflectors are important for point to point communication. Reflectors generally have a parabolic shape but spherical or circular shapes can also be used in scanning systems. Our interest is offset circular reflector with a directive feed. The offset reflectors have no aperture blockage and have asymmetrically shape main beam in one plane and in another perpendicular plane the beamwidth is very small. Therefore, as an example, these kind of offset circular reflectors have usage in navigational systems to scan the Earth from a aeroplane. In this study, the 2D offset circular reflector antenna is solved with an exact analytical-numerical technique with a guaranteed convergence and accuracy for all observation positions. For the same geometry, a physical optics (PO) solution is also generated and some comparisons are made with the exact solution. The exact and PO results are both obtained for E-polarization.

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大孔径偏置圆形反射天线的复源-对偶串联分析

反射天线是现代通信系统中非常流行的一部分。特别是，大型反射器对于点对点通信非常重要。反射器一般呈抛物线形状，但球形或圆形也可用于扫描系统。我们感兴趣的是带有指令馈送的偏移圆形反射器。偏置反射器在一个平面和另一个垂直平面上具有不对称形状的主光束，没有孔径堵塞，波束宽度很小。因此，作为一个例子，这种偏移圆形反射器在导航系统中被用于从飞机上扫描地球。在本研究中，采用精确的解析-数值技术对二维偏置圆形反射面天线进行求解，保证了所有观测位置的收敛性和精度。对于相同的几何形状，还生成了物理光学(PO)解，并与精确解进行了比较。得到了e偏振的精确结果和PO结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)

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