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A Novel Resonant Ground Structure Based on a Cavity-Backed DGS
- Authors
- Shin, Imseob; Lee, Tae-Hak; Lee, Juseop; Kim, Young-Sik
- Issue Date
- 5월-2014
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Defected ground structure (DGS); electromagnetic bandgap (EBG); photonic bandgap (PBG); resonant ground structure (RGS)
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.24, no.5, pp.321 - 323
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
- Volume
- 24
- Number
- 5
- Start Page
- 321
- End Page
- 323
- ISSN
- 1531-1309
- Abstract
- In this letter, a new resonant ground structure (RGS) based on a cavity-backed DGS is proposed. The proposed RGS is similar to a DGS and is modeled by a parallel RLC resonance circuit. Since the proposed RGS utilizes a substrate-filled metallic cavity (SFMC) underneath the DGS, it leads to no back-radiation and high quality factor. The frequency responses and structural parameters are analyzed and verified via simulation and measurement. The quality factor of the proposed RGS with a spiral-shaped defect is larger than that of the DGS with the same defect by a factor of 7.4.
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