A DUAL-BAND METAMATERIAL MICROWAVE ABSORBER
- Authors
- Tak, Jinpil; Jin, Yunnan; Choi, Jaehoon
- Issue Date
- Sep-2016
- Publisher
- WILEY
- Keywords
- dual-band; metamaterial; microwave absorber; frequency selective surface
- Citation
- MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.58, no.9, pp.2052 - 2057
- Indexed
- SCIE
SCOPUS
- Journal Title
- MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
- Volume
- 58
- Number
- 9
- Start Page
- 2052
- End Page
- 2057
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/22211
- DOI
- 10.1002/mop.29977
- ISSN
- 0895-2477
- Abstract
- A dual-band metamaterial microwave absorber for X band ( 8-12 GHz) applications is proposed. A unit cell of the absorber consists of an electric LC ( ELC) resonator, a backing ground plate, and an FR4-epoxy substrate with 0.8 mm thickness. To realize efficient space utilization for the dual resonance, an ELC resonator consisting of asymmetric triangle split-ring resonators is adopted. Using effective medium parameters extracted from the S-parameters, the EM behavior is clarified to describe the operating mechanism. The miniaturized dimensions of the unit cell are 8 mm 3 8 mm 3 0.8 mm. The measured results exhibit two absorptivity peaks stronger than 98.5% and FWHMs of 8.4% and 7.25% at 8.2 GHz and 12 GHz, respectively. Additionally, high absorptivity performance is achieved for EM waves from 08 to 608 regardless of the incident angle.
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