基于PCM的圆极化贴片天线辐射和散射性能一体化设计OA

In response to the insufficient radiation performance and lack of consideration for scattering perfor-mance in the existing design of patch antennas,this paper proposes an integrated design of using polarization con-version metasurface(PCM)to improve radiation performance and enhance scattering performance.By arranging the sequentially rotated metasurface units around the offset fed square-cornered patch antenna and changing the ar-rangement pattern,the radiation performance and scattering performance are effectively improved.Simulation re-sults are shown as follows:The optimal layout of the metasurface antenna achieves a 3 dB axial-ratio bandwidth of 5.02-5.39 GHz,and a peak gain of 9.50 dB.The average antenna gain increases by 4.78 dB compared with the initial antenna;the operating bandwidth achieves an average gain of 8.76 dB and a low RCS of-13.81 dBsm.By changing the sequential rotation layout,the maximum reduction of RCS is 22.36 dB,which is 8.67 dB higher than that of the initial layout.The eigenmode analysis and scattering principle analysis are conducted to verify that the antenna designed in the paper has good radiation and scattering performance,and thus the antenna is expected to improve the stealth and radiation performance of radar antennas.