圆锥对数螺旋天线的设计和验证  

The Design and Manufacture of A Conical Spiral Antenna

作　　者：刘颖 叶君永 何清明 

机构地区：[1]电子信息控制重点实验室,成都610036

出　　处：《电子信息对抗技术》2015年第2期62-66,共5页Electronic Information Warfare Technology

摘　　要：介绍了圆锥对数螺旋天线的特点、原理和设计方法,制作了一种3∶1带宽的圆锥对数螺旋天线,并对实物进行测试验证,测试结果与仿真结果吻合较好。测试结果表明:该天线具有较好的非频变特性,在较小的口径下(直径为1/3最低工作频率波长)实现了良好的前后比,并具有较好的圆极化特性,±60°宽角轴比小于4d B。The characteristics and design of conical spiral antenna is presented. With simula- tion, a 3 ： 1 broadband conical spiral antenna is fabricated and tested. The numerical results are verified by measurements and reasonable agreements between the theory and experiment is ob- tained. Experiment results show that the antenna has good frequency independent characteris- tics, front-to-back ratio（ with the aperture less than 1/3 λmax ） and circular polarization charac- teristics（ the axial ratio is less than 4dB in ±60°）.

关 键 词：圆锥对数螺旋天线 超宽带天线 圆极化 

分 类 号：TN823.31[电子电信—信息与通信工程]