US 11,899,125 B2
Automatic interference detection and avoidance in radar transceiver systems
Alexander Melzer, Neutillmitsch (AT); and Rainer Findenig, Linz (AT)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Oct. 20, 2021, as Appl. No. 17/506,048.
Prior Publication US 2023/0118317 A1, Apr. 20, 2023
Int. Cl. G01S 7/28 (2006.01); G01S 13/50 (2006.01); G01S 7/02 (2006.01)
CPC G01S 7/2813 (2013.01) [G01S 7/0232 (2021.05); G01S 13/50 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A radar system, comprising:
a radar semiconductor chip comprising:
a ramp signal generator configured to generate a frequency-modulated ramp signal within a predefined radar frequency range, the frequency-modulated ramp signal comprising a plurality of frequency ramps each starting at a respective ramp start frequency and ending at a respective ramp stop frequency, wherein the respective ramp start frequencies and the respective ramp stop frequencies of the plurality of frequency ramps define a first frequency range;
a transceiver configured to receive at least one radio frequency (RF) signal from an antenna, the transceiver comprising an interference detection circuit configured to detect an external interference signal included in the at least one RF signal, the external interference signal being within the predefined radar frequency range; and
a controller configured to autonomously adjust at least one ramp parameter based on the detected external interference signal and autonomously transmit the at least one adjusted ramp parameter to a microcontroller.