Journal
IEEE ACCESS
Volume 6, Issue -, Pages 58132-58138Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2018.2875029
Keywords
Broadbeam antenna; cross-dipole antenna; circular polarization; dual-band antenna; GPS antenna
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Funding
- Fundamental Research Program of Shenzhen City [JCYJ20170818094814530]
- Joint Research Fund for Overseas Chinese, Hong Kong and Macao Scientists of the National Natural Science Foundation of China [61728106]
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This paper presents a dual-band circularly polarized cross-dipole antenna with wide axial ratio beamwidths for full upper hemispherical coverage for GPS L1 and L2 bands. The antenna has curved radiating arms and a corrugated back cavity to enhance the beam width. A wideband hybrid coupler is used to feed the antenna at the two nearby frequency bands. Experimental results show that very wide 3-dB AR beamwidths of over 200 degrees can be obtained, fully covering the upper hemisphere for the two GPS bands.
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