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Conference Paper
Small Antenna using 2-D Interdigital Composite Right/Left-Handed (CRLH) Transmission Lines
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- Authors
- Sung Joon Lim, Woo-Young Park, Sang Il Kwak
- Issue Date
- 2008-12
- Citation
- Asia-Pacific Microwave Conference (APMC) 2008, pp.1-4
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, a compact antenna design is proposed based on the 2-D interdigital composite right/left-handed transmission line (CRLH TL), with the design principle illustrated through a dispersion diagram. An interdigital capacitor is used to enhance series capacitance, thereby lowering the resonant frequency without changing the physical size. The proposed concept is validated using a 3 x 3 interdigital CRLH TL, demonstrating resonant frequencies of 3.028 GHz and 2.724 GHz for n = -1 and n = -2 modes, respectively. The realized antenna measures 13.5 mm by 13.5 mm, which corresponds to 0.16λg x 0.16λg at n = -2 mode. This results in a 90% reduction in size compared to a conventional patch antenna, attributed to the 2-D interdigital CRLH TL.
- KSP Keywords
- 2.4 GHz, 28 GHz, 3.5 mm, Antenna design, Compact antenna, Composite Right/Left-Handed Transmission Line(CRLH-TL), Dispersion Diagram, Interdigital Capacitor, Patch Antenna, Resonant frequency(Fr), Small Antenna