Measurement of the parameters of phase-modulated oscillations

Conclusions

• 1. The above technique is applicable for measuring small phase-modulation indexes at a low modulating frequency of Δω≪1.

• 2. An auxiliary frequency divider becomes superfluous for measuring phase-modulation indexes of the order of 2–10°.

• 3. Amplitude-modulation does not affect precision in measuring the parameters of phase-modulated oscillations.

• 4. Precision in measuring phase-modulation indexes is determined by the error in evaluating the search oscillator voltage, and precision in measuring the modulation frequency is determined by that of the search oscillator's frequency graduation scale.

• 5. The resolution of this method rises with an increased division ration of the auxiliary frequency divider.