双侧吸波频率选择表面窗口吸波体设计

Design of Bilateral Wave Absorbing Frequency Selective Surface Window Absorber

频率选择表面窗口吸波体是一种基于频率选择表面(FSS)的带有窗口透波的吸波体结构,它对电磁波具有频带内透波/频带外吸波的特性,这使得它在雷达隐身、天线罩等领域具有广阔的应用前景。本文从FSS吸波层和FSS透波层分别进行分析设计,提出了一种基于FSS的宽带双侧吸波的FSS窗口吸波体。通过仿真得到,窗口吸波体在5.8 GHz附近透波,且在透波频段两侧2.1~3.0 GHz和7.4~11.9 GHz能实现80%吸波率的宽带吸波效果。

Frequency Selective Surface(FSS) window absorber is a kind of absorber structure with window wave transmitting based on FSS.It has the characteristics of in-band wave transmitting/out-band wave absorbing for electromagnetic wave,which makes it have broad application prospects in the fields of radar stealth,radome and so on.In this paper,the FSS wave absorbing layer and FSS wave transmitting layer are analyzed and designed respectively,and an FSS window absorber of broadband bilateral wave absorbing based on FSS is proposed.The simulation results show that the window absorber transmits near 5.8 GHz,and the broadband wave absorbing effect of 80% wave absorbing rate can be achieved at 2.1 ~ 3.0 GHz and 7.4 ~ 11.9 GHz on both sides of the wave transmitting frequency band.