Abstract
A novel perturbing methodology using asymmetrical defected ground structure (DGS) is proposed for a circularly polarized (CP) annual ring antenna with improved antenna gain. By loading two fairs of half dumbbell-shaped DGS at four diagonal corners of the ring radiator, the orthogonally polarized modes are controlled. Simulated and measured results show that the proposed antenna demonstrates good CP radiations at the resonant frequency.
Original language | English |
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Pages (from-to) | 2994-2996 |
Number of pages | 3 |
Journal | Microwave and Optical Technology Letters |
Volume | 53 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2011 Dec |
Keywords
- antenna gain
- circular polarization
- defected ground structure
- microstrip annual ring antenna
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering