Comment on “Design of a Quad-Band Wide-Angle Microwave Metamaterial Absorber”
- 10 Downloads
In recent days, we read a paper called “Design of a Quad-Band Wide-Angle Microwave Metamaterial Absorber”, which was written by Ren et al. In such report, Ren et al. proposed a quad-band wide-angle absorber based on a metallic hexagonal patch layer. The absorption peaks are located at 6.8 GHz, 8.24 GHz, 11.24 GHz, and 12.7 GHz, whose absorptivity values are 97.2%, 95.2%, 97.7%, and 98.5%, respectively. However, we verified that the results which were given by Ren et al. are wrong because they ignored the polarization conversion. The proposed quad-band metamaterial absorber (QBMA) is not an absorber.
KeywordsMetamaterial polarization converter absorber
Unable to display preview. Download preview PDF.
This work was supported by the Open Research Program in China’s State Key Laboratory of Millimeter Waves (Grant No. K201927).