一种宽带便携式测向天线  

A Broadband Portable Direction Finding Antenna

作　　者：万宇宏 周江昇[2] 宗显政[3] 沈英达[2] 

机构地区：[1]海军司令部信息化部,北京100841 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033 [3]电子科技大学,四川成都611731

出　　处：《通信对抗》2013年第4期27-30,共4页Communication Countermeasures

摘　　要：设计了一种基于瓦特森-瓦特测向体制的便携式测向天线，采用U形单极Adcock天线阵的形式，通过180°移相两两合成正交“8”字形辐射方向图，中心为有源鞭天线，用作参考天线，具有全向辐射特性。为改善工作带宽，采用了电感加载及宽带匹配网络技术进行改进，并借助HFSS电磁仿真软件对提出的天线进行仿真优化。结果显示天线VSWR≤2的阻抗带宽达到了30-100MHz，同时具有良好的方向图特性。A broadband portable direction finding antenna （DFA） based on Wason-Watt mechanism is pre- sented in this paper, the orthogonal figure-eight radiation pattern is realized by U-shape antennas with 1800 phase-shift . The center reference antenna is an active whip antenna, and it has an omnidirectional radiation pattern. To improve impedance bandwidth, techniques of inductive loading and broadband matching network are atopted. The proposed antenna is simulated and optimized by full-wave electromagnetic simulation soft- ware HFSS. The obtained results show that the proposed antenna has a very broad impedance bandwidth from 30MHz to 100MHz （VSWR≤ 2）, and simultaneously has a good radiation characteristic.

关 键 词：瓦特森-瓦特 宽带 Adcock天线 

分 类 号：TN822.8[电子电信—信息与通信工程]