Radar circuit, radar system and method for testing
AssigneeInfineon Technology AG
InventorsHerbert Jaeger, Christoph Wagner
Life of this patent
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Abstract
A radar circuit for controlling a radar antenna in a vehicle comprises an antenna connection for connection of a radar antenna, a radar circuit for transmission and reception of a radar signal, wherein the radar circuit is connected to the antenna connection. A test circuit to test the connection of the radar antenna is provided.
Claims17
A radar circuit comprising:
- an antenna connection to provide connection to a radar antenna,
- a radar circuit operable to generate a radar signal for transmission to the antenna connection,
- a test circuit operable to generate a test signal, wherein a frequency of the test signal is at least by a factor of 104 lower than a frequency of the radar signal,
- wherein the test circuit is configured to:
- receive a returned test signal from the radar antenna, and
- detect whether the radar antenna is functionally connected correctly based on an evaluation of the returned test signal.
A method for testing a connection between a radar circuit and a radar antenna in a vehicle, the method comprising:
- providing a test signal having a frequency lower than a frequency of a radar signal by at least 104;
- measuring a returned test signal that is returned from the radar antenna in a closed loop to produce at least one measured value;
- and
- evaluating the measured value to identify whether the radar antenna is functionally connected correctly.
A radar circuit comprising:
- an antenna connection to provide connection to a radar antenna,
- a radar circuit configured to generate a radar signal for transmission to the antenna connection,
- a test circuit configured to generate a test signal and provide the generated test signal to the radar antenna via the antenna connection, wherein the test signal is a DC signal,
- wherein the test circuit is configured to:
- receive a returned test signal from the radar antenna, the returned test signal being based on the test signal, and
- detect whether the radar antenna is functionally connected correctly based on an evaluation of the returned test signal.
A method for testing the operation of a connection between a radar circuit and a radar antenna in a vehicle, for use in a radar system, the method comprising:
- providing a test signal to the radar antenna, wherein the test signal has a frequency lower by at least a factor of 104 than a frequency of the radar signal;
- measuring a returned test signal that is returned from the radar antenna in a closed loop to produce at least one measured value, the returned test signal being based on the test signal provided to the radar antenna;
- and
- evaluating the at least one measured value to identify whether the radar antenna is functionally connected correctly.
Dependencies are inferred from the claim text.