一种具有双吸收带的频率选择特性吸波器  

Frequency-selective Rasorber with Dual Absorption Bands

作　　者：尹丽媛 薛正辉[1] 金城[1] 任武[1] 李伟明[1] 张彬超 吕奇皓 YIN Liyuan;XUE Zhenghui;JIN Cheng;REN Wu;LI Weiming;ZHANG Binchao;LYU Qihao(School of Information and Electronics,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学信息与电子学院,北京100081

出　　处：《无线电工程》2022年第2期221-225,共5页Radio Engineering

基　　金：国家自然科学基金(61871036,62071040)。

摘　　要：提出了一种三维的具有双吸收带的频率选择传输(AFST)结构,该结构由嵌有片式电阻器的金属条和平行板波导结构嵌套组成,可以实现吸收-传输-吸收的特性,即在通带两侧各有一个吸收带,且具有每个吸收带包含2个反射零点宽带性能。推导了该结构的等效电路模型研究设计理念,并通过仿真得到了在斜入射情况下性能仍然可以保持稳定的结果,验证了所提出等效电路模型的有效性和所设计的AFST结构的频率选择特性。A three-dimensional Absorptive Frequency-Selective Transmission(AFST)structure with dual absorption bands is proposed,which is composed of a metal strip embedded with chip resistors and a parallel plate waveguide structure.The structure can realize characteristics of absorption-transmission-absorption,that is,there is an absorption band on each side of the passband,and each absorption band contains two reflection zeros.The equivalent circuit model of the structure is derived,the design concept is studied and obtained through simulation.The results show that the performance remains stable under oblique incidence.The effectiveness of the proposed equivalent circuit model and the frequency selection characteristics of the designed AFST structure are verified.

关 键 词：吸收式频率选择性传输结构 雷达截面积缩减 吸波器 

分 类 号：TN928[电子电信—通信与信息系统]