A Cavity-Backed Spiral Slot Antenna with Wide Axial Ratio Beamwidth for GPS System

TitleA Cavity-Backed Spiral Slot Antenna with Wide Axial Ratio Beamwidth for GPS System
Publication TypeJournal Article
Year of Publication2014
AuthorsBao, XL, Ammann, MJ
Journal TitleMicrowave and Optical Technology Letters
Volume56
Issue5
Pagination1050-1054
Journal Date05/2014
Abstract

A monofilar spiral slot antenna with a cavity-backed reflector is presented, which can achieve the performance of the wide axial ratio beamwave for global positioning system (GPS) system. It comprises an arrangement of a single printed spiral slots fed by a 50-Ω microstrip line. By using cavity-backed covering the slot structure, a wide axial ratio beamwidth performance is achieved in the GPS L1 frequency. The angle with less than 3-dB axial ratio at 1.575 GHz in the YoZ plane is about 215°. The measured results show that the HPBW beamwidths at 1.575 GHz are 100° in the YoZ plane, respectively. The peak gain is 5.5 dBic.

Notes

https://www.researchgate.net/publication/260680536_A_cavity-backed_spira...

URLhttp://onlinelibrary.wiley.com/doi/10.1002/mop.28255/abstract
DOI10.1002/mop.28255
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