一种新型宽带电阻膜吸波体设计

目的]为了改善传统电磁吸波材料的吸波特性,基于阻抗匹配理论设计一种具有高吸收率的电阻膜吸波体.方法]吸波体采用周期排布的电阻膜图案?介质基板?导体接地板结构,其电阻膜单元由耶路撒冷十字单元与外围的方环单元组合而成.结果]仿真结果表明,所设计的吸波体在2.9～5.1 GHz的频率范围内对电磁波的吸收率超过90％,峰...

Design of novel broadband absorber based on resistive film

Objectives]In order to improve the performance of traditional absorbing materials,a high-absorptivity broadband absorber is designed.Methods]The absorber consists of a resistive film,dielectric substrate and metal ground plate.The element unit of the resistive film is composed of a Jerusalem cross unit and outer square loop.Results]The simulated results indicate that the absorption of the designed absorber is more than 90%in the frequency range of 2.9–5.1 GHz,and an absorptivity peak of 99.4%can be achieved.Absorption performance can also be maintained in wide-angle cases and polarization-insensitive cases.Conclusions]The absorber proposed in this paper has significance for the design and application of broadband absorbers.