US 12,074,648 B2
In-device characterization of antenna coupling
Erwin Spits, Utrecht (NL); Francesco Gatta, San Diego, CA (US); Adrianus Van Bezooijen, Molenhoek (NL); Leon Metreaud, Pepperell, MA (US); and Hakan Inanoglu, Acton, MA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 21, 2022, as Appl. No. 17/950,093.
Prior Publication US 2024/0097801 A1, Mar. 21, 2024
Int. Cl. H04B 17/00 (2015.01); H04B 17/12 (2015.01); H04B 17/13 (2015.01); H04B 17/21 (2015.01)
CPC H04B 17/0085 (2013.01) [H04B 17/12 (2015.01); H04B 17/13 (2015.01); H04B 17/21 (2015.01)] 29 Claims
OG exemplary drawing
 
1. A wireless communication device, comprising:
a plurality of antennas including a first antenna and a second antenna;
a transmitter including a transmit path;
a receiver including a receive path;
an antenna switch array configurable into a first configuration in which the transmit path is coupled through the antenna switch array to drive the first antenna and in which the receive path is coupled through the antenna switch array to receive from the second antenna; and
a controller configured to measure an operating gain between the transmit path and the receive path while the antenna switch array is in the first configuration, the controller being further configured to estimate a coupling gain between the first antenna and the second antenna based upon the operating gain, a calibration transmit gain of the transmit path, and a calibration receive gain of the receive path.