Helical antennas with nonuniform helix diameter

Proceedings of the Eighteenth National Radio Science Conference. NRSC'2001 (IEEE Cat. No.01EX462) Pub Date : 2001-03-27 DOI:10.1109/NRSC.2001.929187

H. Elkamchouchi, A. Salem

引用次数: 6

Abstract

On this paper the helical antenna is considered with different helix diameters, uniform, linear, exponential and logarithmic diameter variations are considered. In each case, the radiation fields in the principal planes, the gains, axial ratio and current distributions are obtained. Also the input impedance is calculated as the frequency varies around the design values for each case. In all cases the pitch is taken constant. The numerical evaluations indicate that the exponential helix gives better performance.

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螺旋直径不均匀的螺旋天线

本文考虑了不同螺旋直径的螺旋天线，考虑了均匀、线性、指数和对数直径的变化。在每种情况下，得到了主平面的辐射场、增益、轴比和电流分布。此外，输入阻抗是根据频率在每种情况下的设计值周围的变化来计算的。在所有情况下，音高都是恒定的。数值计算表明，指数螺旋结构具有更好的性能。

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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来源期刊

Proceedings of the Eighteenth National Radio Science Conference. NRSC'2001 (IEEE Cat. No.01EX462)

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