Analysis and design of two-arm conical spiral antennas

被引：26

作者：

Hertel, TW ^{[1
]}

Smith, GS ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2002年 / 44卷 / 01期

关键词：

broadband antenna; conical spiral antenna; FDTD; frequency-independent antenna;

D O I：

10.1109/15.990708

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The two-arm, conical spiral antenna is analyzed using the finite-difference time-domain method. The analysis is validated by comparison with measurements of the input impedance and the realized gain. A parametric study is performed with the analysis, and the results front the study are used to produce new design graphs for this antenna. These graphs supplement and extend the existing, mainly empirical, design base for this antenna. Two resistive terminations, intended to improve the low-frequency performance, are examined. One is a termination formed from two lumped resistors, and the other is a new termination formed from a thin disc of resistive material. These terminations are shown to improve the front-to-back ratio and axial ratio for the antenna.

引用

页码：25 / 37

页数：13

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