US 12,066,565 B2
Radar system with balancing of the receiving channels over a plurality of radar chips
Stefan Helmut Schmalzl, Sauerlach (DE)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Apr. 6, 2021, as Appl. No. 17/223,742.
Claims priority of application No. 102020109611.9 (DE), filed on Apr. 7, 2020.
Prior Publication US 2021/0311164 A1, Oct. 7, 2021
Int. Cl. G01S 7/35 (2006.01); G01S 7/03 (2006.01)
CPC G01S 7/352 (2013.01) [G01S 7/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radar system, comprising:
a power divider configured to forward a first radio frequency (RF) signal;
a first radar chip comprising a plurality of first receiving channels comprising first RF input ports,
wherein only a single first receiving channel, of the plurality of first receiving channels, is configured to provide, based on the first RF signal, a first digital baseband signal associated with a first phase, and
wherein another first receiving channel, of the plurality of first receiving channels and different from the single first receiving channel, is configured to provide, based on a second RF signal, a second digital baseband signal;
a second radar chip comprising a plurality of second receiving channels comprising second RF input ports,
wherein only a single second receiving channel, of the plurality of second receiving channels, is configured to provide, based on the first RF signal, a third digital baseband signal associated with a second phase, and
wherein another second receiving channel, of the plurality of second receiving channels and different from the single second receiving channel, is configured to provide, based on a third RF signal, a fourth digital baseband signal,
wherein the first digital baseband signal, the second digital baseband signal, the third digital baseband signal, and the fourth digital baseband signal are different from each other; and
at least one processor configured to:
receive the first digital baseband signal, the third digital baseband signal, and at least one of the second digital baseband signal or the fourth digital baseband signal,
determine information indicative of a deviation between the first phase, associated with the first digital baseband signal, and the second phase, associated with the third digital baseband signal, and
modify, based on the information indicative of the deviation, at least one of the second digital baseband signal or the fourth digital baseband signal.