Abstract:

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 TsengCheng 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.