时间调制矩形平面阵超低副瓣方向图综合

摘要

The time modulation technology is introduced into conventional rectangular planar array, which can form the time modulated rectangular planar array. By using differential evolution algorithm and TsengCheng method to design and optimize the static amplitude excitations and switch-on time sequences of high speed RF switches, the ultra-low sidelobe pattern can be synthesized and sideband radiation can be suppressed with very low dynamic range ratio of static amplitude excitations. Numerical results of a 10 × 10 rectangular planar array show that the -50 dB sidelobe pattern is obtained, and the sideband radiation is effectively reduced,which demonstrates the validity of the proposed method.%将时间调制技术引入到常规矩形平面阵当中,可构成时间调制矩形平面阵.利用差分进化算法和Tseng-Cheng方法对静态激励幅度和高速射频开关的工作时序进行设计和优化,可以在较低的激励幅度动态范围比的情况下在中心频率处综合超低副瓣方向图,同时有效抑制边带辐射.通过对一个10×10的矩形平面阵进行仿真得到了-50 dB的超低副瓣,同时边带辐射得到了有效抑制,验证了本文方法的有效性.