Verfahren und Schaltungsanordnung zur Demodulation eines digitalen frequenzmodulierten Signals

摘要

The invention relates to a method and a circuit for demodulating a digital frequency-modulated signal, wherein after demodulation of the digital frequency-modulated signal, the following steps are carried out to generate amplitude (A(n)) and the differential phase value ( phi '(n)) of the signal: comparing amplitude (A(n)) for the demodulated signal with constant (K) at a determined sampling interval (n); multiplying phase value ( phi '(n)) of the corresponding sampling interval (n) by factor (c), wherein said factor (c) is the product of amplitude (A(n)) of the determined sampling interval and amplitude (A(n-1)) of a previous sampling interval when amplitude (A(n)) is smaller than constant (K).