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为了提高雷达的作用距离、作用范围以及减小其他方向的干扰,针对雷达对天线的要求,文中通过采用不等间距的变尺度算法设计优化了一种具有特殊方向图的收发天线系统。仿真设计了集成在同一块Rogers4350B材质上的一副发射天线(TX)、两副接收天线(RX1、RX2)微带天线阵,并且使该天线阵列在E面形成特殊形状的方向图。最后,对三天线系统进行了加工测试,测试结果表明:该天线阵列E面波束赋形效果良好,有效地提高了雷达的作用距离和作用范围,并且减小了其他方向信号的干扰。
In order to improve the radar’s range, range of action and reduce the interference in other directions, aiming at the requirements of radar, an antenna system with special directional pattern is designed and optimized by using variable scale algorithm with unequal spacing. A transmitting antenna (TX) and two receiving antenna (RX1, RX2) microstrip antenna arrays integrated on the same Rogers4350B are designed and simulated, and the antenna array is formed into a specially shaped pattern on the E surface. Finally, the three-antenna system is processed and tested. The test results show that the E-plane beamforming effect of the antenna array is good, which effectively increases the range and the range of the radar and reduces the interference of other directional signals.