US 12,074,380 B2
Phased array transceiver with built-in phase interferometer and/or transmitter linearization feedback
Donald Felt Kimball, El Cajon, CA (US); Carl Einer Tulberg, San Diego, CA (US); and Bautista Reinoso, San Diego, CA (US)
Assigned to Murata Manufacturing Co., Ltd, Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Dec. 21, 2021, as Appl. No. 17/558,106.
Application 17/558,106 is a continuation of application No. PCT/US2020/039173, filed on Jun. 23, 2020.
Application 17/558,106 is a continuation of application No. 16/455,517, filed on Jun. 27, 2019, granted, now 10,965,026, issued on Mar. 30, 2021.
Application PCT/US2020/039173 is a continuation in part of application No. 16/601,302, filed on Oct. 14, 2019, granted, now 10,715,199, issued on Jul. 14, 2020.
Application 16/601,302 is a continuation of application No. 16/455,427, filed on Jun. 27, 2019, granted, now 10,484,038, issued on Nov. 19, 2019.
Prior Publication US 2022/0140479 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01Q 3/26 (2006.01); H01Q 3/42 (2006.01); H04B 1/04 (2006.01)
CPC H01Q 3/267 (2013.01) [H01Q 3/42 (2013.01); H04B 1/04 (2013.01); H04B 2001/0425 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A transceiver circuit comprising:
a) switchable transmit and receive RF processing paths, each selectively configured to operate according to one of:
a1) a transmit path for transmission of an RF signal through a respective element of a plurality of elements of an antenna array, or
a2) a receive path for reception of an RF signal through the respective element of the antenna array;
b) switchable feedback paths selectively coupled to the switchable transmit and receive RF processing paths via switchable elements of said feedback paths; and
c) one or more RF combiners coupled to the switchable feedback paths,
wherein said switchable feedback paths are selectively configured to operate according to at least a transmit path linearization mode, and
wherein in the transmit path linearization mode,
i) one or more transmit paths of the switchable transmit and receive RF processing paths are each coupled to the respective element of the antenna array, and
ii) the switchable elements couple a portion of the RF signal through each of the one or more transmit paths to the one or more RF combiners to obtain a combined RF signal that is configured to be used by a controller for linearization of the one or more transmit paths.