宽带抗干扰定向单锥天线设计

Design of Anti-Interference Broadband Directional Mono-Cone Antenna

为了避开电磁干扰源,对全向锥形天线做了改进,设计了一种用于无线通信的宽带抗干扰定向单锥天线.应用加载短路枝节来实现单锥天线H面的定向性,与传统实现定向性的给天线组阵和添加反射器等方法不同,该方法不会增大天线的尺寸,同时H面又具有很宽的3 dB波瓣宽度.该定向单锥天线在1.7～6.0GHz频带内的回波损耗小于-10 dB,仿真和实测结果吻合良好,在较宽的频带内具有良好的阻抗特性和方向图特性.

A broadband anti-interference directional mono-cone antenna is designed in order to avoid electromagnetic interference sources in wireless communication. Omni-directional cone antenna is used by adding shorted stub to realize mono-cone antenna directionality in H-plane. The method is different from general methods such as using array antenna or adding reflector, which will not increase the size of the antenna. The 3 dB beamwidth in H-plane is wide and the return loss is less than - 10 dB within the frequency range of 1.7 - 6.0 GHz of this antenna. The acceptable agreement of measured and simulated results shows that this kind of antenna has perfect input impedance and pattern properties.