Patent ID: 9105961
Filing Date: 2015-08-11
Classification: H01Q

Abstract:
1. A dual frequency global navigation satellite system (GNSS) antenna, which includes: a low-frequency patch having a first dielectric element with a first dielectric constant; a high-frequency patch positioned over the low-frequency patch and having a second dielectric element with a second dielectric constant; said second dielectric constant being higher than said first dielectric constant; a first 90° hybrid splitter configured for forcing an approximately 90° phase shift for right-hand circular (RHC) polarization of a low-frequency band; a second 90° hybrid splitter configured for forcing an approximately 90° phase shift for RHC polarization of a high-frequency band; dual feed points in said high-frequency patch located at approximately 90° rotation from each other and configured for forcing a phase shift of the low-frequency band; and dual feed slots in said low-frequency patch located at approximately 90° rotation from each other and configured for forcing a phase shift of the high-frequency band.