A Compact Broadband Phase Shifting Network for a Four-Feed Multi-Mode Global Navigation Satellite System Antenna

Abstract:

A compact feeding network for a wideband circularly polarized multi-mode Global Navigation Satellite System (GNSS) antenna is presented. Four feed method for the antenna is adopted to suppress the higher modes and increase the 3dB axial ratio (AR) bandwidth. A broadband phase shifter with 0°, 90°, 180°, 270° phase differences using composite right/left-handed transmission line structure combined with novel schiffman phase shifter is analyzed, designed, simulated, implemented and measured in this article.

• Periodical: Applied Mechanics and Materials (Volumes 157-158)
• Pages: 1139-1143
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.157-158.1139
• Online since: February 2012
• Authors: Hong Bin Ge, Yuan Yao, Jun Sheng Yu, Xiao Dong Chen
• Keywords: Antenna Feed, Broadband Antenna, Metamaterial, Patch Antenna, Phase Shifter

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