volume | PIER Journals

Abstract

A compact circularly polarized shorted annular stacked patch antenna has been proposed for global navigation satellite system (GNSS) in this paper. The antenna has been designed to operate for the satellite navigation frequencies including GPS, GLONASS, Galileo and Compass (1100MHz-1600 MHz). In order to obtain wideband characteristics, broadband 90° hybrids have been used as a secondary network. The designed antenna has a 73.7% 10-dB return loss bandwidth from 0.9 GHz to 1.95GHz, and 60.1% 3-dB axial ratio bandwidth from 0.96 GHz to 1.8 GHz, respectively. Shorted annular stacked patch structure is incorporated into the antenna design helping to obtain stable gain bandwidth, broad beamwidth characteristics and good axial ratio at low elevation. The designed antenna occupies a compact size of 100 mm×100 mm×15.5 mm.

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Dr. Xi Li

Dr. Lin Yang

Dr. Min Wang

Dr. Yi Wang

Dr. Xi Chen

Dr. Juan Lei