一种新型网格微带单脉冲天线

Novel Grid Microstrip Monopulse Antenna

提出了一种新型网格微带单脉冲天线设计方法,分别给出了驻波曲线和辐射方向图的仿真结果。该天线的辐射单元采用网格微带的形式,仅通过微带辐射单元的不同宽度实现阵面的锥削分布设计,克服了传统波导缝隙天线设计复杂和加工精度要求高的缺点,工程实现较为简单。仿真结果表明,该天线具有2.8%以上的相对带宽(驻波不大于2)以及优于-20 dB的副瓣性能。

A novel design method of grid microstrip monopulse antenna is introduced,and the simulation results of voltage standing waves ratio(VSWR)and radiation pattern are given respectively.The radiation element of the antenna is in the form of grid microstrip.The taper distribution of array surface is required by the different width of microstrip radiation element,which overcomes the shortcomings of traditional wave guide slot antenna,such as design complexity and high accuracy.The implementation is relatively simple.The simulation results show that the relative bandwidth of the antenna is 2.8%(VSWR is not more than 2),and the side lobe amplitude of the antenna is better than-20 dB.