短波对数周期天线宽频带性能分析  

Wide-band Characteristics of Short Wave LPDA

作　　者：戴宇峰[1] 柳超[1] 吴华宁[1] 谢旭[1] 

机构地区：[1]海军工程大学电子工程学院通信工程系,武汉430033

出　　处：《计算机与数字工程》2013年第12期1898-1899,1927,共3页Computer & Digital Engineering

摘　　要：地面对短波对数周期天线(LPDA)辐射性能影响明显,会影响对数周期天线的宽频带特性。分析了天线架设高度对水平极化对数周期天线辐射性能的影响。运用电磁计算软件FEKO对天线进行建模,得出天线在各个频率及天线架设高度下的输入阻抗和辐射方向图。结果显示架设高度会影响天线的宽频带特性,架设高度越高影响越大。The ground has obvious influence on the performance of short wave log periodic antenna, like wide-band characteristics. The effects of height on performance of horizontally polarized LPDA are analyzed. Electromagnetic computing software, FEKO, has been used to model LPDA, calculate antenna feed impedance and radiation pattern with different frequencies and antenna heights. As a result, height real- ly has an impact on the wide-hand characteristics of LPDA, and the higher the antenna is, the greater the effectisis.

关 键 词：对数周期天线 短波 方向图 仰角 

分 类 号：TN821.6[电子电信—信息与通信工程]