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作 者:印倩 李丽娴 邵晓龙 荣志鹏 吴翠翠 YIN Qian;LI Lixian;SHAO Xiaolong;RONG Zhipeng;WU Cuicui(Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,China)
机构地区:[1]上海航天电子通讯设备研究所
出 处:《无线电工程》2020年第1期77-80,共4页Radio Engineering
摘 要:针对目前大多数波导喇叭电磁兼容(EMC)测量天线存在的重量重、频带窄和单极化等问题,设计了一种新型超宽带Vivaldi双极化EMC测量天线。通过将2个相同的Vivaldi天线十字正交安装,实现双线极化功能;优化2个天线的馈电位置,实现2个天线高隔离、方向图一致、对称、平缓和交叉极化低等技术要求。利用ANSYS HFSS电磁仿真软件对天线进行仿真分析,结果表明,0.6~6 GHz时,辐射方向图在±55°内平缓、对称、无凹坑,满足探头天线的使用需求。整个频带内交叉极化<-25 dB,2个输入端口隔离度≤-28 dB,完成了对天线实物的加工,其测量结果与设计结果较好地吻合,满足了作为EMC测试天线的使用需求。In order to meet the demands of a low weight and wide bandwidth,as well as dual linear polarizations in antenna measuring,a novel ultra-wide band dual linear polarizations Electro Magnetic Compatibility(EMC)measuring antenna is designed.The EMC measuring antenna mainly contains two Vivaldi antennas which are intersected to each other.By optimizing the feeding,a dual linear polarization,high isolation,and low cross polarization is achieved while remaining a small size and low weight.The EMC measuring antenna is simulated and analyzed by ANSYS HFSS,and the results show that the antenna provides a flat gain response in the angle range of-55°^+55°during the bandwidth of 0.6~6 GHz.And the cross polarization of the probe is less than-25 dB,and the port isolation is better than-28 dB,which is sufficient in practical antenna measuring.
分 类 号:TN015[电子电信—物理电子学]
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