FMCW radar
AssigneeInfineon Technologies AG
InventorAlexander Belitzer
Life of this patent
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Abstract
A radar system and a corresponding method for a radar system are described herein. In accordance with one example, the method includes receiving—via a first RF port of a coupler—an antenna signal from an antenna, receiving—with an auxiliary receiver—a representation of the antenna signal via a second RF port of the coupler, and generating—with the auxiliary receiver—an auxiliary base-band signal from the representation of the antenna signal. Based on the auxiliary base-band signal, an external radar interference signal transmitted from an external radar device incident at the antenna is detected.
Claims22
A radar system, comprising:
- a radio frequency (RF) coupler having a first RF port for receiving an RF antenna signal from an antenna, a second RF port configured to output a representation of the RF antenna signal, and a third RF port configured to output a further representation of the RF antenna signal;
- a reception channel including a first mixer coupled to the third RF port and configured to generate a receiver base-band signal based on the further representation of the RF antenna signal;
- an auxiliary receiver having an RF input coupled to the second RF port of the RF coupler, the auxiliary receiver includes a second mixer configured to receive the representation of the RF antenna signal and configured to generate an auxiliary base-band signal based on the representation of the RF antenna signal;
- and
- a detection circuit configured to detect, based on the auxiliary base-band signal, an external radar interference signal transmitted from an external radar device incident at the antenna.
A method for a radar system, the method comprising:
- receiving, via a first radio frequency (RF) port of a coupler, an antenna signal from an antenna;
- receiving, by an auxiliary receiver, a representation of the antenna signal via a second RF port of the coupler;
- receiving, by a reception channel, a further representation of the antenna signal via a third RF port of the coupler;
- generating, by a first mixer of the reception channel, a receiver base-band signal from the further representation of the antenna signal;
- generating, by a second mixer of the auxiliary receiver, an auxiliary base-band signal from the representation of the antenna signal;
- and
- detecting, by a detector circuit, based on the auxiliary base-band signal, an external radar interference signal transmitted from an external radar device incident at the antenna.
Dependencies are inferred from the claim text.