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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2018-08-24
Comment on ``Frequency Tunable Low-Cost Microwave Absorber for EMI/EMC Application''
By
Hao Zhang,

    Dr. Hao Zhang

    College of Electronic and Optical Engineering & College of Microelectronics

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Yu Ma,

    Dr. Yu Ma

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Hai Feng Zhang,

    Prof. Hai Feng Zhang

    College of Electronic and Information Engineering

    Nanjing University of Aeronautics and Astronautics

    China

    Homepage

Jing Yang,

    Dr. Jing Yang

    College of Electronic and Optical Engineering & College of Microelectronics

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Jia-Xuan Liu

    Dr. Jia-Xuan Liu

    College of Electronic and Optical Engineering & College of Microelectronics

    Nanjing University of Posts and Telecommunications

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 78, 39-43, 2018
doi:10.2528/PIERL18052602 | Google Scholar

Abstract
In a recently published report, Sen and Das [5] proposed a frequency tunable low-cost microwave absorber to obtain tunable absorption spectra. In this paper, we justify that the proposed device is not an absorber. It is observed that the total absorption rates merely reach 2% and 14.85% for the air gaps of 3.5 mm and 7.5 mm, respectively, when the co- and cross-polarization reflections are taken into account in the reported device. Obviously, The original authors erroneously consider a polarization converter as an absorber, and the obvious errors can be found in their paper.
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Citation
Hao Zhang, Yu Ma, Hai Feng Zhang, Jing Yang, and Jia-Xuan Liu, "Comment on ``Frequency Tunable Low-Cost Microwave Absorber for EMI/EMC Application''," Progress In Electromagnetics Research Letters, Vol. 78, 39-43, 2018.
doi:10.2528/PIERL18052602
References

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