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Ultra-thin metamaterial perfect absorbers for single-/dual-/multi-band microwave applications
IET Microwaves, Antennas & Propagation ( IF 1.7 ) Pub Date : 2020-03-26 , DOI: 10.1049/iet-map.2019.0623 Prince Jain 1 , Arvind K. Singh 1 , Janmejay K. Pandey 1 , Sahil Garg 1 , Shonak Bansal 1 , Mayank Agarwal 2 , Sanjeev Kumar 3 , Neha Sardana 4 , Neena Gupta 1 , Arun K. Singh 1
IET Microwaves, Antennas & Propagation ( IF 1.7 ) Pub Date : 2020-03-26 , DOI: 10.1049/iet-map.2019.0623 Prince Jain 1 , Arvind K. Singh 1 , Janmejay K. Pandey 1 , Sahil Garg 1 , Shonak Bansal 1 , Mayank Agarwal 2 , Sanjeev Kumar 3 , Neha Sardana 4 , Neena Gupta 1 , Arun K. Singh 1
Affiliation
In this study, the authors present three different metamaterial absorbers (MMAs) namely, T, split-I (SI) and split-Jerusalem cross (SJC) with different dimensions and geometrical configurations. The absorption rates of T-, SI- and SJC-shaped absorbers are studied at microwave frequencies. T-shaped absorber demonstrates perfect absorption at 10.19 GHz, making it suitable for single band operation, whereas SI-shaped absorber exhibits two perfect absorption peaks at 9.32 and 10.75 GHz finding its application in dual band operation. However, novel SJC-shaped absorber demonstrates multiple absorption peaks at 9.92, 10.42, 10.93, 11.75 and 13.25 GHz with absorption of 99.5, 91, 99.9, 91.8 and 99.6%, respectively, making it suitable for X- and Ku-band operations. The proposed MMAs have a thickness of around 0.8 mm (i.e. <;
λ
/37) with respect to the lowest frequency of operation. Furthermore, the absorbers are analysed for different angles of polarisation and incidence for transverse electric polarised wave with a step size of 15°. The proposed absorbers have been fabricated and experimentally demonstrated at X-band verifying the results obtained from simulations and implementing an equivalent circuit method. Further, SJC-shaped absorber is demonstrated for multi-and wide-band terahertz applications exhibiting four perfect absorption peaks at 2.76, 2.89, 3.02 and 3.31 THz.
中文翻译:
超薄超材料完美吸收体,适用于单/双/多频带微波应用
在这项研究中,作者提出了三种不同的超材料吸收体(MMA),即T,Split-I(SI)和Split-Jerusalem十字架(SJC),具有不同的尺寸和几何构型。在微波频率下研究了T型,SI型和SJC型吸收器的吸收率。T形吸收体在10.19 GHz处表现出完美的吸收,使其适合于单频带操作,而SI形吸收体在9.32和10.75 GHz处表现出两个完美的吸收峰,可用于双频带操作。但是,新型SJC形吸收体在9.92、10.42、10.93、11.75和13.25 GHz处表现出多个吸收峰,吸收率分别为99.5、91、99.9、91.8和99.6%,使其适用于X波段和Ku波段操作。建议的MMA的厚度约为0.8毫米(即<; λ / 37)。此外,分析了吸收器的不同极化角和横向电极化波的入射角(步长为15°)。拟议的吸收器已经在X波段进行了制造和实验验证,以验证从模拟中获得的结果并实现等效电路方法。此外,SJC形吸收体被证明用于多和宽带太赫兹应用,在2.76、2.89、3.02和3.31 THz处表现出四个完美的吸收峰。
更新日期:2020-04-22
中文翻译:
超薄超材料完美吸收体,适用于单/双/多频带微波应用
在这项研究中,作者提出了三种不同的超材料吸收体(MMA),即T,Split-I(SI)和Split-Jerusalem十字架(SJC),具有不同的尺寸和几何构型。在微波频率下研究了T型,SI型和SJC型吸收器的吸收率。T形吸收体在10.19 GHz处表现出完美的吸收,使其适合于单频带操作,而SI形吸收体在9.32和10.75 GHz处表现出两个完美的吸收峰,可用于双频带操作。但是,新型SJC形吸收体在9.92、10.42、10.93、11.75和13.25 GHz处表现出多个吸收峰,吸收率分别为99.5、91、99.9、91.8和99.6%,使其适用于X波段和Ku波段操作。建议的MMA的厚度约为0.8毫米(即<; λ / 37)。此外,分析了吸收器的不同极化角和横向电极化波的入射角(步长为15°)。拟议的吸收器已经在X波段进行了制造和实验验证,以验证从模拟中获得的结果并实现等效电路方法。此外,SJC形吸收体被证明用于多和宽带太赫兹应用,在2.76、2.89、3.02和3.31 THz处表现出四个完美的吸收峰。