A wideband tunable microwave graphene-based absorber and duplexer

被引：0
|
作者：
Mohammad Khani A.A. [1 ]
Fouladian M. [1 ]
Mazloum J. [2 ]
机构：
[1] Department of Electrical Engineering, College of Technical and Engineering, Islamic Azad University, Saveh Branch, Saveh
[2] Department of Electrical Engineering, Shahid Sattari Aeronautical University of Science and Technology, Tehran
来源：
Solid State Communications | 2022年 / 353卷
关键词：
Duplexer; Equivalent circuit model; Graphene; Microwave absorber; Oblique incident waves;
D O I：
10.1016/j.ssc.2022.114797
中图分类号：
学科分类号：
摘要：
In this paper, a novel tunable graphene-based absorber with more than 90% absorption in the frequency range of 12.8–31.5 GHz and also, duplexer is proposed. This microwave absorber (MA) consists of double split rings and graphene strips placed on a metal-backed dielectric. The characteristic of the graphene surface conductivity is measurable in a wide range of frequencies and it can be manipulated by changing the chemical potential of the graphene; therefore, the proposed MA not only has a wide absorption band but also can be utilized in narrowband applications as well. Then, the performance of the proposed graphene-based MA was further improved. As a result, the absorption bandwidth increased to 33.3 GHz in the frequency range of 10.8–44.1 GHz with an absorption coefficient above 90%. The stable broadband absorption makes the proposed MA attractable for a wide range of applications. © 2022
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