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High isolation dual-polarized patch antenna using integrated defected ground structure
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- Authors
- Younkyu Chung, Seong-Sik Jeon, Dal Ahn, Jae-Ick Choi, Tatsuo Itoh
- Issue Date
- 2004-01
- Citation
- IEEE Microwave and Wireless Components Letters, v.14, no.1, pp.4-6
- ISSN
- 1531-1309
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- This letter presents a high isolation dual-frequency orthogonally polarized rectangular patch antenna utilizing microstrip feed line integrated with a defected ground structure (DGS). The demonstrated approach results in a significant improvement in port isolation in comparison to a conventional dual-polarized antenna fed by simple microstrip lines. Measurements show an improvement of 20 dB in port isolation relative to the conventional antenna, operating at 2 and 2.5 GHz. Image impedance of a microstrip line with DGS is controlled by the DGS geometry without modifying the dimension of the line. A 150 ?? high impedance line is effectively implemented using a microstrip line with 75 ?? line width by incorporating the DGS.
- KSP Keywords
- 5 GHz, Dual-polarized antenna, Line width, Microstrip Feedline, Microstrip Line, defected ground structure(DGS), dual-frequency, high impedance, high isolation, port isolation, rectangular patch antenna