US 11,815,621 B2
Digital compensation for mismatches in a radar system
Sriram Murali, Bangalore (IN); Karthik Subburaj, Bangalore (IN); and Karthik Ramasubramanian, Bangalore (IN)
Assigned to Texas Instruments Incorporated, Dallas, TX (US)
Filed by TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)
Filed on Jul. 6, 2021, as Appl. No. 17/368,319.
Application 17/368,319 is a continuation of application No. 15/004,443, filed on Jan. 22, 2016, granted, now 11,054,499.
Prior Publication US 2021/0333357 A1, Oct. 28, 2021
Int. Cl. G01S 7/35 (2006.01); G01S 7/40 (2006.01); G01S 13/931 (2020.01)
CPC G01S 7/352 (2013.01) [G01S 7/4021 (2013.01); G01S 13/931 (2013.01); G01S 7/358 (2021.05); G01S 7/406 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
a first receive channel configured to couple to a first receive antenna;
a second receive channel configured to couple to a second receive antenna that includes a compensation filter; and
a control circuit coupled to the first receive channel and the second receive channel and configured to:
receive, via the first receive channel, a first signal associated with a reflection from a target, wherein the first signal has a first frequency;
receive, via the second receive channel, a second signal associated with the reflection from the target, wherein the second signal has a second frequency;
determine a difference between the first frequency and the second frequency; and
configure the compensation filter to apply a frequency shift based on the difference between the first frequency and the second frequency.