Patent ID: 11860223
Assignee: STMICROELECTRONICS S.R.L.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A radio-frequency receiver, comprising:
a first digital-to-analog converter, which, in operation, generates a common coarse tuning signal, wherein the common coarse tuning signal is an analog voltage signal;
a modulator, which in operation, generates a first fine-tuning signal;
a second digital-to-analog converter, which, in operation, generates a second fine-tuning signal;
a first oscillator, which, in operation, generates a first oscillation signal having a first oscillation frequency that is set using the common coarse tuning signal and the first fine-tuning signal;
a first frequency divider, which, in operation, frequency divides the first oscillation signal, generating a first frequency-divided signal;
a second oscillator, which, in operation, generates a radio-frequency test signal having a second oscillation frequency that is set using the common coarse tuning signal, wherein the common coarse tuning signal is received by the first oscillator and the second oscillator; and
test circuitry, coupled to the second oscillator and the first frequency divider, which, in operation,
generates a self-test signal of the radio-frequency receiver based on the radio-frequency test signal and the first frequency-divided signal; and
performs diagnostic operations on the radio-frequency receiver using the self-test signal, performs calibration operations on the radio-frequency receiver using the self-test signal, or performs diagnostic and calibration operations on the radio-frequency receiver using the self-test signal.