Optimal parameter retrieval for metamaterial absorbers using the least-square method for wide incidence angle insensitivity
- Authors
- Lee, Dongju; Trung, Nguyen Toan; Moon, Un-Chul; Lim, Sungjoon
- Issue Date
- Jun-2017
- Publisher
- OPTICAL SOC AMER
- Citation
- APPLIED OPTICS, v.56, no.16, pp 4670 - 4674
- Pages
- 5
- Journal Title
- APPLIED OPTICS
- Volume
- 56
- Number
- 16
- Start Page
- 4670
- End Page
- 4674
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/4343
- DOI
- 10.1364/AO.56.004670
- ISSN
- 1559-128X
2155-3165
- Abstract
- In this paper, we propose a specific algorithm based on the least-square method to predict the incidence angle insensitivity of a metamaterial absorber. The proposed algorithm was analyzed on a metamaterial absorber design with circular sectors on the top layer and a full copper cover on the bottom layer. We retrieved the parameters of inductance, capacitance, and conductance from the equivalent circuit of the metamaterial absorber at different incidence angles of 0 degrees, 30 degrees, 65 degrees, and 70 degrees under both transverse electric and transverse magnetic polarization. The complex impedances calculated from the optimal parameter retrieval are compared with the complex impedances from full-wave simulation at each incidence angle. The calculated and simulated results show excellent agreement, and the proposed algorithm can be used to design angle-insensitive metamaterial absorbers.
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Collections - College of ICT Engineering > School of Electrical and Electronics Engineering > 1. Journal Articles
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