Axial Ratio Correction for GNSS Antennas in Asymetrically Coupled Environments

TitleAxial Ratio Correction for GNSS Antennas in Asymetrically Coupled Environments
Publication TypeConference Paper
Year of Publication2017
AuthorsNarbudowicz, A, Ammann, MJ, Heberling, D
Conference NameIEEE Antennas and Propagation Society Symposium
Pagination2621-2622
Conference Start Date09/07/2017
Conference LocationSan Diego, CA, USA
Abstract

The paper demonstrates a technique to correct the axial ratio of dual-fed circularly-polarized antennas in the presence of strong coupling with surrounding components or asymmetrically reduced ground plane. It demonstrated - based on a standard GPS L1 patch antenna - that for certain situations a phase shift of up to 135° may be beneficial compared to the routinely used 90°, allowing for AR improvement from 7.8 dB (for 90°) to 2.1 dB (135°).

URLhttp://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=8073353
DOI10.1109/APUSNCURSINRSM.2017.8073353