COMMENT ON ``FREQUENCY TUNABLE LOW-COST MICROWAVE ABSORBER FOR EMI/EMC APPLICATION'' | Zendy

Hao Zhang | Zendy; Yu Ma | Zendy; Hai Zhang | Zendy; Jing Yang | Zendy; Jiaxuan Liu | Zendy

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COMMENT ON ``FREQUENCY TUNABLE LOW-COST MICROWAVE ABSORBER FOR EMI/EMC APPLICATION''

Author(s) -

Hao Zhang,

Yu Ma,

Hai Zhang,

Jing Yang,

Jiaxuan Liu

Publication year - 2018

Publication title -

progress in electromagnetics research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.245

H-Index - 33

ISSN - 1937-6480

DOI - 10.2528/pierl18052602

Subject(s) - emi , microwave , electromagnetic compatibility , electromagnetic interference , materials science , electronic engineering , computer science , engineering , telecommunications

—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 coand 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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