Compact low-cross-polarization horn antennas with serpentine-shaped taper

被引：33

作者：

Deguchi, H ^{[1
]}

Tsuji, M ^{[1
]}

Shigesawa, H ^{[1
]}

机构：

[1] Doshisha Univ, Kyoto 6020047, Japan

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2004年 / 52卷 / 10期

基金：

日本学术振兴会;

关键词：

antenna radiation patterns; horn antennas; polarization;

D O I：

10.1109/TAP.2004.834423

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：

A compact horn with low cross polarization component less than -35 dB over 5% frequency bandwidth has been obtained by optimizing the taper configuration. To reduce the gain loss caused by spherical wavefront in a short length horn with a large flare angle, a serpentine-shaped taper successfully generates five higher-order modes. Such a taper configuration is represented by varying lengths of various uniform waveguides in stepwise approximation, while keeping the dimension of each step discontinuity constant. As a result, the computational time for obtaining the proposed horn is greatly reduced because scattering matrices of the step discontinuities are pre-calculated before the optimization. The verification of its high performance has been performed numerically and experimentally.

引用

页码：2510 / 2516

页数：7

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