US 12,170,409 B2
Cross-coupling modeling and compensation for antenna apparatus
Eric Pepin, Seattle, WA (US); Kim W. Schulze, Seattle, WA (US); Ersin Yetisir, Redmond, WA (US); and Javier Rodriguez De Luis, Kirkland, WA (US)
Assigned to Space Exploration Technologies Corp., Hawthorne, CA (US)
Filed by Space Exploration Technologies Corp., Hawthorne, CA (US)
Filed on Dec. 30, 2022, as Appl. No. 18/091,995.
Application 18/091,995 is a continuation of application No. 17/149,496, filed on Jan. 14, 2021, granted, now 11,563,270.
Prior Publication US 2023/0134123 A1, May 4, 2023
Int. Cl. H01Q 3/30 (2006.01)
CPC H01Q 3/30 (2013.01) 22 Claims
OG exemplary drawing
 
1. A method comprising:
determining one or more cross-coupling coefficients representing an electrical cross-coupling between a first signal path through a component of a phased array antenna and a second signal path through the component of the phased array antenna, wherein a first beamforming weight is determined for a first signal associated with the first signal path and wherein a second beamforming weight is determined for a second signal associated with the second signal path, and wherein a gain and/or phase relationship between the first beamforming weight and the second beamforming weight is determined based on a beam steering direction for the phased array antenna;
based on the one or more cross-coupling coefficients, determining a first modified beamforming weight for the first signal associated with the first signal path through the component and a second modified beamforming weight for the second signal associated with the second signal path through the component, wherein the first modified beamforming weight modifies the first beamforming weight based on the one or more cross-coupling coefficients and the second modified beamforming weight modifies the second beamforming weight based on the one or more cross-coupling coefficient;
applying the first modified beamforming weight to the first signal associated with the first signal path; and
applying the second modified beamforming weight to the second signal associated with the second signal path.