Verfahren und Anordnung zur Frequenzmodulation eines hochfrequenten Signals

摘要

Described is a method and device for modulating the frequency of a high-frequency signal, the signal being generated by an oscillator which is controlled by comparing the actual frequency signal with an adjustable reference frequency signal. The actual signal is made up of pulses with a mean repetition frequency corresponding to an actual frequency, each pulse being derived from one side of the high-frequency signal and its phase being defined by a given cycle. The reference frequency signal is made up of pulses with a mean repetition frequency corresponding to a reference frequency. The pulses cause a forwards/backwards counter to increment or decrement, and a control voltage for the oscillator is derived from the count of the counter.