基于阻抗加载的吸波体设计与性能分析

Design and Performance Analysis of Absorber Based on Impedance Loading

瞄准隐身材料吸波和传输两大功能,首先使用等效电路法研究了传输与吸波功能等效电路特性,在此基础之上,设计了一款具有传输通带的吸波体,并利用电磁仿真软件CST对所设计的具有传输通带的吸波体的传输和吸波特性进行了仿真,仿真结果表明所设计的吸波体传输通带内插损小于0.5 dB,吸波带绝对带宽高达10 GHz以上;最后将所设计的具有传输通带的吸波罩应用到喇叭天线口面,进一步验证了其传输和吸波特性。

Aiming at two functions of wave-absorbing and transmission for stealth material,this paper firstly studies the features of equivalent circuit of transmission and absorbing function by using equivalent circuit method,on this basis,designs a absorber with transmission passband,and uses electromagnetic simulation software CST to simulate the transmission and absorbing feature of the designed absorber with transmission passband.Simulated results show that the insertion loss of the designed absorber transmission passband is less than 0.5 dB and absolute bandwidth of absorbing band is more than 10 GHz.At last,the designed radome with transmission passband is applied to the face of horn antenna and its functions of transmission and absorbing are verified further.