Radar apparatuses and methods
AssigneeInfineon Technologies AG
InventorBernd-Ulrich KLEPSER
Life of this patent
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Abstract
The present disclosure relates to a radar apparatus. The radar apparatus includes a transceiver circuit with a frequency synthesizer. The radar apparatus further includes a control circuit configured to set different operational modes of the transceiver circuit. The control circuit is configured to control the transceiver circuit to, in a detection mode, emit a sequence of subsequent FMCW radar chirps in a transmit frequency band between a minimum frequency and a maximum frequency, and, in another operational mode different from the detection mode, perform one or more other operations of the transceiver circuit by adjusting the frequency synthesizer to a frequency outside the transmit frequency band.
Claims18
A radar apparatus (100), comprising:
- a transceiver circuit comprising a frequency synthesizer;
- and
- a control circuit configured to set different operational modes of the transceiver circuit,
- wherein the transceiver circuit is controlled to:
- in a detection mode, emit a sequence of subsequent frequency modulated continuous wave (FMCW) radar chirps in a transmit frequency band between a minimum frequency and a maximum frequency;
- and
- in another operational mode different from the detection mode, adjust the frequency synthesizer to a frequency outside the transmit frequency band to perform one or more other operations of the transceiver circuit.
A radar method, comprising:
- controlling a transceiver circuit, wherein controlling the transceiver circuit includes:
- emitting, in a detection mode, a sequence of subsequent frequency modulated continuous wave (FMCW) radar chirps in a transmit frequency band between a minimum frequency and a maximum frequency;
- and
- adjusting, in another operational mode different from the detection mode, a frequency synthesizer to a frequency outside the transmit frequency band to perform one or more other operations of the transceiver circuit.
A radar apparatus, comprising:
- a transceiver circuit comprising a frequency synthesizer;
- and
- a control circuit configured to cause the transceiver circuit to emit a sequence of subsequent FMCW radar chirps in a transmit frequency band between a minimum frequency and a maximum frequency,
- wherein the control circuit is configured to vary a target frequency of the frequency synthesizer outside the transmit frequency band during a settling time interval of a phase locked loop, (PLL) between the end of a first chirp and the start of a subsequent second chirp.
A radar method, comprising:
- controlling a transceiver circuit with a frequency synthesizer, wherein controlling the transceiver circuit with the frequency synthesizer includes:
- emitting a sequence of subsequent frequency modulated continuous wave (FMCW) radar chirps in a transmit frequency band between a minimum frequency and a maximum frequency, and
- varying a target frequency of the frequency synthesizer outside the transmit frequency band during a settling time interval of a phase locked loop (PLL) between an end of a first chirp and a start of a subsequent second chirp.
Dependencies are inferred from the claim text.