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机载的安装环境对机载设备的尺寸和重量提出了更高的要求。全向天线是近距离空间链路信号传输的有效技术手段,设计一种机载重量轻、小型化的全向天线具有非常重要的现实意义。区别于传统马刀天线,所设计的天线在尺寸、重量上得到了很大的缩减;为了满足共形要求,天线采用了微带形式,2 mm的剖面能够根据载体的具体形式进行共形设计;采用双臂组合单极子形式进行阻抗加载,天线实现了超过50%的驻波带宽(驻波小于2.5)。通过测试,天线样机的实测性能与仿真结果吻合很好。
Airborne installation environment on the airborne equipment size and weight put forward higher requirements. An omnidirectional antenna is an effective technique for transmitting signals in close space. It is very important to design an omnidirectional antenna with light weight and small size. Different from the traditional saber antenna, the designed antenna has been greatly reduced in size and weight. In order to meet the requirement of conformality, the antenna adopts the microstrip mode, and the 2 mm profile can be conformally designed according to the specific form of the carrier. Impedance loading in the form of a dual monopole monopole, the antenna achieves more than 50% of the standing-wave bandwidth (standing wave less than 2.5). Through the test, the measured performance of the antenna prototype is in good agreement with the simulation results.