CPC G01R 31/2884 (2013.01) [G01R 31/2832 (2013.01); G01S 7/4056 (2013.01); G01S 7/4069 (2021.05)] | 17 Claims |
1. A method of testing or calibrating a radio-frequency receiver, comprising:
generating, using a first digital-to-analog converter, a common coarse tuning signal, wherein the common coarse tuning signal is an analog voltage signal;
generating, using a modulator, a first fine-tuning signal;
generating a second fine-tuning signal using a second digital-to-analog converter;
setting, using the common coarse tuning signal and the first fine-tuning signal, a first oscillation frequency of a first oscillator of the radio-frequency receiver;
generating a local oscillator signal of the radio-frequency receiver using the first oscillator;
applying frequency division to the local oscillator signal, producing a frequency-divided signal;
setting, using the common coarse tuning signal, a second oscillation frequency of a second oscillator of the radio-frequency receiver, wherein the common coarse tuning signal is received by the first oscillator and the second oscillator;
generating a radio-frequency test signal of the radio-frequency receiver using the second oscillator;
generating, using the radio-frequency test signal and the frequency-divided signal, a self-test signal of the radio-frequency receiver and
performing diagnostic operations on the radio-frequency receiver using the self-test signal, performing calibration operations on the radio-frequency receiver using the self-test signal, or performing diagnostic and calibration operations on the radio-frequency receiver using the self-test signal.
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