Angle-and polarization-insensitive broadband metamaterial absorber using resistive fan-shaped resonators
- Authors
- Toan Trung Nguyen; Lim, Sungjoon
- Issue Date
- Jan-2018
- Publisher
- AMER INST PHYSICS
- Citation
- APPLIED PHYSICS LETTERS, v.112, no.2
- Journal Title
- APPLIED PHYSICS LETTERS
- Volume
- 112
- Number
- 2
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/1327
- DOI
- 10.1063/1.5004211
- ISSN
- 0003-6951
1077-3118
- Abstract
- In this paper, we propose an angle- and polarization-insensitive broadband metamaterial absorber with a resistive fan-shaped resonator. First, the symmetric fan-shaped resonator is designed, and four lumped resistors are loaded in the gap between each fan-shaped circular sector on the top layer to increase the bandwidth. Based on the circuit parameters, the periodic structure of the fan-shaped resonator is designed using full-wave analysis. The proposed absorber is fabricated using a printed circuit board process in a single layer. The experimental results indicate that an absorptivity value greater than 96% was achieved in the frequency range of 7-12.8 GHz for all polarization angles at normal incidence. Under oblique incidence, the measured absorptivity was greater than 90% in the range of 7-12.1 GHz when the incident angle varied from 0 degrees to 45 degrees in the transverse electric mode. In the transverse magnetic mode, the measured absorptivity was greater than 90% between 7.1 and 9.3 GHz when the incident angle varied from 0 degrees to 45 degrees. Published by AIP Publishing.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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