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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2015-10-07
A Wideband Wide-Angle Ultra-Thin Metamaterial Microwave Absorber
By
Deepak Sood,

    Dr. Deepak Sood

    Department of Electronics and Communication Engineering

    University Institute of Engineering and Technology, Kurukshetra University

    India

    Homepage

Chandra Charu Tripathi

    Dr. Chandra Charu Tripathi

    Kurukshetra University

    India

    Homepage

Progress In Electromagnetics Research M, Vol. 44, 39-46, 2015
doi:10.2528/PIERM15082903 | Google Scholar

Abstract
A novel design of wideband, ultra-thin, wide-angle metamaterial microwave absorber has been presented. The unit cell of the proposed structure is designed by using parametric optimization in such a way that absorption frequencies come closer and give wideband response. For normal incidence, the simulated FWHM bandwidth of the proposed structure is 1.94 GHz, i.e. from 5.05 GHz to 6.99 GHz and -10 dB absorption bandwidth is 1.3 GHz from 5.27 GHz to 6.57 GHz. The proposed structure has been analyzed for different angles of polarization, and it gives high absorption (more than 50%) for oblique angles of incidence up to 60˚. The designed absorber is in low profile with a unit cell size of λ0/6 and ultrathin with a thickness of λ0/32 at the center frequency of 5.92 GHz corresponding to 10 dB absorption bandwidth. The current and electromagnetic field distributions have been analyzed to understand the absorption mechanism of the absorber. An array of the proposed absorber has been fabricated and experimentally tested for various polarization angles and oblique incidences of electromagnetic wave. The proposed absorber is well suited for surveillance and other defense applications.
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Citation
Deepak Sood, and Chandra Charu Tripathi, "A Wideband Wide-Angle Ultra-Thin Metamaterial Microwave Absorber," Progress In Electromagnetics Research M, Vol. 44, 39-46, 2015.
doi:10.2528/PIERM15082903
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