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Dual-Band Circularly Polarized Patch Antenna With First Positive and Negative Modes
- Authors
- Ko, Seung-Tae; Park, Byung-Chul; Lee, Jeong-Hae
- Issue Date
- 2013
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Composite right/left-handed (CRLH); dual-band circular polarization; first negative mode
- Citation
- IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, v.12, pp.1165 - 1168
- Journal Title
- IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
- Volume
- 12
- Start Page
- 1165
- End Page
- 1168
- ISSN
- 1536-1225
- Abstract
- A dual-band circularly polarized (CP) patch antenna having a first positive (+1) mode and negative (-1) mode is proposed in this letter. The +1 mode is a half-wavelength mode in the right-handed (RH) region, and the -1 mode is induced by a composite right/left-handed (CRLH) transmission line (TL) in the left-handed (LH) region. In order to realize CP properties, a trimmed square patch antenna and a 2x2 triangle mushroom antenna are employed, respectively, and the two antennas are combined to obtain small size. The proposed antenna has a single feed and a single-layered substrate even though it contains two antennas. Measurements show that the antenna has CP bandwidths of 2.879-2.901 GHz at the low band and 3.822-3.829 GHz at the high band. Finally, peak gains of 6.26 and 6.97 dBic are obtained and radiation efficiencies of 82% and 65% are measured at each band, respectively.
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Related Researcher
- Lee, Jeong Hae
- Engineering (Electronic & Electrical Engineering)