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http://dx.doi.org/10.5515/KJKIEES.2017.28.5.355

Design of Dual-Band GPS Array Antenna Using In-Direct Feeding Pad  

Kang, Seung-Seok (School of Electronic and Electrical Engineering, Hongik University)
Seo, Seung-Mo (Agency of Defense Development)
Byun, Gangil (Research Institute of Science Technology, Hongik University)
Choo, Hosung (School of Electronic and Electrical Engineering, Hongik University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.28, no.5, 2017 , pp. 355-365 More about this Journal
Abstract
In this paper, we propose the design of a dual-band GPS antenna using in-direct feeding pads. The antenna consists of an upper patch for the GPS L1 band, a lower patch for the GPS L2 band, and two pads on the middle layer for feeding the two radiating patches. A hybrid chip coupler with a phase difference of $90^{\circ}$ is employed at the two feeding ports for achieving a broad circular polarization (CP) bandwidth. The proposed antenna shows bore-sight gains of 3.0 dBic(L1) and 5.1 dBic(L2), and axial ratios of 3.3 dB(L1) and 0.3 dB(L2) by measurement. The active element patterns of the fabricated array with 7 elements show bore-sight gains of -0.4 dBic (L1) and -2.4 dBic(L2), respectively. It proves that the proposed antenna structure is suitable for use in GPS array applications.
Keywords
GPS Antenna; In-Direct Feeding; Dual-Band; Feeding-Pad; High-Dielectric;
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Times Cited By KSCI : 1  (Citation Analysis)
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