US 12,332,375 B2
MIMO channel extenders with associated systems and methods
Danny Elad, Kibutz Matzuva (IL); and Dan Corcos, Tel Aviv (IL)
Assigned to Ay Dee Kay, Aliso Viejo, CA (US)
Filed by AyDeeKay LLC, Aliso Viejo, CA (US)
Filed on Sep. 22, 2023, as Appl. No. 18/371,978.
Application 18/371,978 is a continuation of application No. 17/160,915, filed on Jan. 28, 2021, granted, now 11,796,630.
Prior Publication US 2024/0111019 A1, Apr. 4, 2024
Int. Cl. G01S 7/35 (2006.01); H01Q 3/38 (2006.01); G01S 13/02 (2006.01); G01S 13/42 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/35 (2013.01) [H01Q 3/38 (2013.01); G01S 7/352 (2013.01); G01S 2013/0263 (2013.01); G01S 13/42 (2013.01); G01S 13/931 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radar system, comprising:
a radar transceiver configured to generate transmit signals and to downconvert at least one receive signal; and
transmit-side extenders, each coupled to the radar transceiver and each coupled to a given set of multiple transmit antennas, configured to obtain a given transmit signal in the transmit signals and to provide a set of multiple output signals, each of the multiple output signals having an adjustable phase shift,
wherein the transmit signals and the at least one receive signal are in a band of radio frequencies that is different from baseband;
wherein the radar transceiver is implemented on a chip and the transmit-side extenders are implemented on one or more separate second chips, the transmit-side extenders increase a number of transmit antennas supported by the radar transceiver, and the transmit-side extenders are coupled to transmit ports of the radar transceiver; and
wherein the given transmit signal comprises a sequence of chirps, and wherein a given transmit-side extender in the transmit-side extenders is configured to adjust the phase-shifts for the multiple output signals multiple times during each chirp to provide different frequency shifts, different frequency sweep rates, or code modulation to spread input signal energy across a larger spectrum.