volume | PIER Journals

2018-08-24

Comment on ``Frequency Tunable Low-Cost Microwave Absorber for EMI/EMC Application''

Hao Zhang,

Dr. Hao Zhang

College of Electronic and Optical Engineering & College of Microelectronics

Nanjing University of Posts and Telecommunications

China

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Yu Ma,

Dr. Yu Ma

Nanjing University of Posts and Telecommunications

China

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Hai Feng Zhang,

Prof. Hai Feng Zhang

College of Electronic and Information Engineering

Nanjing University of Aeronautics and Astronautics

China

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Jing Yang,

Dr. Jing Yang

College of Electronic and Optical Engineering & College of Microelectronics

Nanjing University of Posts and Telecommunications

China

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Jia-Xuan Liu

Dr. Jia-Xuan Liu

College of Electronic and Optical Engineering & College of Microelectronics

Nanjing University of Posts and Telecommunications

China

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Progress In Electromagnetics Research Letters, Vol. 78, 39-43, 2018

doi:10.2528/PIERL18052602

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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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

1. Zhai, H. Q., C. H. Zhan, L. Liu, and C. H. Liang, "A new tunable dual-band metamaterial absorber with wide-angle TE and TM polarization stability," Journal of Electromagnetic Waves and Applications, Vol. 29, No. 6, 774-785, 2015.
doi:10.1080/09205071.2015.1024335

2. Xiong, H., Y. B. Wu, J. Dong, M. C. Tang, Y. N. Jiang, and X. P. Zeng, "Ultra-thin and broadband tunable metamaterial graphene absorber," Opt. Express, Vol. 26, No. 2, 1681-1688, 2018.
doi:10.1364/OE.26.001681

3. Yao, G., F. R. Ling, J. Yue, C. Y. Luo, J. Ji, and J. Q. Yao, "Dual-band tunable perfect metamaterial absorber in the THz range," Opt. Express, Vol. 24, No. 2, 1518-1527, 2016.
doi:10.1364/OE.24.001518

4. Li, J. L., J. J. Jiang, Y. He, W. H. Xu, M. Chen, L. Miao, and S. W. Bie, "Design of a tunable low-frequency and broadband radar absorber based on active frequency selective surface," IEEE Antennas Wireless Propag. Lett., Vol. 15, 774-777, 2016.
doi:10.1109/LAWP.2015.2473688

5. Sen, G. and S. Das, "Frequency tunable low cost microwave absorber for EMI/EMC application," Progress In Electromagnetics Research Letters, Vol. 74, 47-52, 2018.
doi:10.2528/PIERL17120601

6. Liu, X. B., J. S. Zhang, W. Li, R. Lu, L. M. Li, Z. Xu, and A. X. Zhang, "Three-band polarization converter based on reflective metasurface," IEEE Antennas Wireless Propag. Lett., Vol. 16, 924-927, 2017.
doi:10.1109/LAWP.2016.2614686

7. Huang, X. J., D. Yang, and H. L. Yang, "Multiple-band reflective polarization converter using U-shaped metamaterial," J. Appl. Phys., Vol. 115, No. 10, 103505, 2014.
doi:10.1063/1.4868076