FMCW radar system on a chip measuring phase noise
AssigneeTexas Instruments Incorporated
InventorBrian Paul Ginsburg
Life of this patent
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Abstract
A cascaded radar system is provided that includes a master radar system-on-a-chip (SOC) with transmission signal generation circuitry and a slave radar SOC coupled to an output of the master radar SOC to receive a signal from the transmission signal generation circuitry of the master SOC. In this system, the slave radar SOC is operable to measure phase noise in the signal received from the transmission signal generation circuitry of the master SOC.
Claims20
A cascaded radar system comprising:
- a master radar system-on-a-chip (SOC) including first transmission signal generation circuitry;
- and
- a slave radar SOC coupled to an output of the master radar SOC to receive a first signal from the first transmission signal generation circuitry, the slave radar SOC operable to measure phase noise in the first signal.
A method for phase noise measurement in a cascaded radar system including a master radar system-on-a-chip (SOC) and a slave radar SOC, the method comprising:
- receiving, by the slave radar SOC, a signal generated by first transmission signal generation circuitry of the master radar SOC;
- and
- measuring phase noise in the signal in slave radar SOC.
A radar device configured to operate in a normal mode and a phase noise measurement mode, the radar device comprising:
- first transmission signal generation circuitry operable to generate a reference signal when the radar device is in phase noise measurement mode and to generate signals for transmission when the radar device is in normal mode;
- an input buffer coupled to second transmission signal generation circuitry of another radar device to receive a signal from the second transmission signal generation circuitry when the radar device is in phase noise measurement mode;
- at least one receive channel including a baseband filter chain;
- and
- a test mixer comprising:
- a first input coupled to the first transmission signal generation circuitry and configured to receive the reference signal;
- a second input coupled to the input buffer and configured to receive the signal from the input buffer;
- and
- an output coupled to the baseband filter chain.
Dependencies are inferred from the claim text.