US 11,799,207 B2
Antennas for reception of satellite signals
Nuri Celik, Milpitas, CA (US)
Assigned to Trimble Inc., Sunnyvale, CA (US)
Filed by Trimble Inc., Sunnyvale, CA (US)
Filed on Jan. 26, 2022, as Appl. No. 17/584,919.
Application 17/584,919 is a continuation of application No. 16/436,720, filed on Jun. 10, 2019, granted, now 11,271,319.
Prior Publication US 2022/0149534 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01Q 1/24 (2006.01); H01Q 13/18 (2006.01); H01Q 1/48 (2006.01); H01Q 1/38 (2006.01); H01Q 21/06 (2006.01); H01Q 1/52 (2006.01); H01Q 15/00 (2006.01)
CPC H01Q 13/18 (2013.01) [H01Q 1/247 (2013.01); H01Q 1/38 (2013.01); H01Q 1/48 (2013.01); H01Q 1/528 (2013.01); H01Q 15/006 (2013.01); H01Q 21/065 (2013.01); H01Q 1/246 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An antenna configured to receive global navigation satellite system (GNSS) signals, comprising:
a substrate having a front side and a backside opposite the front side;
a frontside patch arranged on the front side of the substrate, the frontside patch configured as a radiating element;
one or more impedance transformers, each of the one or more impedance transformers including a microstrip arranged on the front side of the substrate, each microstrip coupled to an antenna feed at an input and coupled to the frontside patch at an output; and
a metamaterial ground plane comprising:
a plurality of backside patches arranged on the backside of the substrate and separated from the frontside patch by the substrate, wherein the plurality of backside patches include a center backside patch surrounded in a radial direction by a plurality of intermediate backside patches, and an outer backside patch surrounding the plurality of intermediate backside patches, the center backside patch and the plurality of intermediate backside patches arranged in a pattern that provides circular symmetry with respect to a center of the antenna; and
a cavity coupled to the substrate, wherein each of the plurality of intermediate backside patches are electrically isolated from the cavity.