상세정보
학술지
A Wideband and Compact EBG Structure With a Circular Defected Ground Structure
- 저자
- 김명회, 감동근
- 발행일
- 201403
- 출처
- IEEE Transactions on Components, Packaging, and Manufacturing Technology, v.4 no.3, pp.496-503
- ISSN
- 2156-3950
- 출판사
- IEEE
- 협약과제
- 14MR3100, 차기위성 Flexible 통신방송 탑재체 핵심기술 개발, 안재영
- 초록
- We propose a new analysis method to determine the bandgap characteristics of an electromagnetic bandgap structure with a defected ground structure (DGS). The proposed method is based on a 1-D segmented transmission line model and a piecewise linear approximation of Zo within a unit cell. Although the previous method is only applicable to rectangular DGSs (RDGSs), the proposed method is applicable to any DGS shapes. As an example, the proposed method is applied to a circular DGS and shows a good agreement with full-wave simulations of the unit cell and measurements of 11\,\times\,11 unit cells. The circular DGS achieves a 15% improvement in the stopband bandwidth over the RDGS with the same perforation area. The proposed method allows us to explore a variety of DGS shapes in the search for better stopband characteristics. It also offers the basis for numerical optimization techniques to be used in synthesizing DGS shapes to meet required stopband characteristics. © 2011-2012 IEEE.
- KSP 제안 키워드
- Analysis method, Circular defected ground structure(CDGS), Compact EBG structure, Electromagnetic BandGap(EBG), Electromagnetic Bandgap Structure, Full-wave, Optimization techniques(OT), Perforation area, Piecewise linear approximation(PLA), Stopband bandwidth, Transmission line model