Patch Antenna Asymmetry Performance Considerations & Mitigation

C. Bartone and J. Schopis

Abstract:	Patch antenna have widespread use in GNSS applications due to their low profile, small size, and low cost. While the radiation characteristics of a single-element patch antenna can be affected by the antenna design, including ground plane size and shape, the ability to dynamically control the radiation characteristics in azimuth and elevation is limited. This paper puts forward a singleantenna GNSS patch antenna design that can dynamically control the radiation characteristic, whereby an area of high directivity (i.e., broad beam) can be placed, along with a commensurate area of low directivity that may be useful for interference suppression. Here, a circular fourfeed GNSS L5 patch antenna over a circular ground plane with four-probe is illustrated with an amplitude and phase control subsystem for beam control. To control the radiation pattern, a four-feed circular patch antenna was modeled and simulated using a high-fidelity computational electromagnetic model (CEM). This control has a major advantage by controlling the radiation characteristic to allow for isolation of interfering signals.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	907 - 914
Cite this article:	Bartone, C., Schopis, J., "Patch Antenna Asymmetry Performance Considerations & Mitigation," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 907-914.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In