无地平面的轴向螺旋分析

Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109) Pub Date : 1998-02-24 DOI:10.1109/NRSC.1998.711450

S. Zainud-Deen

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引用次数: 1

摘要

研究了一种以相邻环和两个寄生环代替地平面的螺旋天线。结构的尺寸进行了优化，以在现场模式中提供最大的前后比。数值结果与平衡螺旋(BH)天线进行了比较。利用矩量法确定了沿天线方向的电流分布。根据得到的电流分布计算辐射特性。此外，还研究了输入阻抗、轴比和功率增益的频率响应。

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Analysis of axial-mode helix without a ground plane

The version of helical antenna in which the ground plane is replaced by an adjacent loop and two parasitic loops (HAWGP) is investigated. The dimensions of the structure are optimized to give maximum front to back ratio in the field pattern. The numerical results are compared with that of the balanced helical (BH) antenna. Using the moment method, the current distribution along the antenna is determined. The radiation characteristics are calculated on the basis of the obtained current distribution. Also, the frequency response of the input impedance, axial ratio, and power gain are investigated.

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Proceedings of the Fifteenth National Radio Science Conference. NRSC '98 (Cat. No.98EX109)

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