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2015-03-05
Wideband Circular Polarization Cavitay-Backed Slot Antenna for GNSS Applications
By
Progress In Electromagnetics Research Letters, Vol. 52, 31-36, 2015
Abstract
This paper presents a wideband circular polarization antenna for Global Navigation Satellite System (GNSS). By exciting four slots etched along each edge of a square ground with equal amplitude and 90° phase difference, good circular polarization performance is achieved. A novel radiation element, composed of back-side slot and front-side monopole, is proposed to realize a wideband radiation. Meanwhile, the feed network composed of Schiffman phase shifters and Wilkinson power dividers maintains this wideband performance. A backed cavity is used to suppress the backward radiation, therefore enhances the frontward gain. Measured results of the fabricated antenna show good agreement with the simulated ones. The main advantages of this antenna include its wide bandwidth, good circular polarization, high front to back ratio, low cost, and easy fabrication, which make it very attractive for GNSS terrestrial applications.
Citation
Chunhong Chen, Xinpeng Zhang, Shishan Qi, and Wen Wu, "Wideband Circular Polarization Cavitay-Backed Slot Antenna for GNSS Applications," Progress In Electromagnetics Research Letters, Vol. 52, 31-36, 2015.
doi:10.2528/PIERL15010607
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