Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 10, Issue -, Pages 87-90Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2011.2110631
Keywords
Circularly polarized (CP); patch antenna; U-slot
Funding
- City University of Hong Kong [7008050]
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A single-feed circularly polarized (CP) patch antenna at L-band is designed and built using the recently developed U-slot loaded patch technique. With the presence of the U-slot, the antenna fabricated on a high-dielectric-constant (epsilon(r) = 10.02) substrate achieves a reasonable axial-ratio bandwidth. At the operating frequency of 1.575 GHz, the size of the patch is 0.13 lambda(o) x 0.13 lambda(o) , while the ground size is 0.315 lambda(o) x 0.315 lambda(o) and the thickness of the substrate is 0.05 lambda(o). The measured gain is 4.5 dBi, and axial-ratio bandwidth is 3.2%.
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