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频率调制信号公式

The function of the Frequency Modulating signal is:

\(s_{fm}(t)=A\cos(2\pi f_{i}t)\)

and the \(f_{i}\) is the instantaneous frequency of a VCO-generated FM signal:

\(f_{i}=f_{c}+k_{f}\cdot m(t)\)

where \(f_{c}\) is the carrier frequency, \(k_{f}\) is the VCO gain (or the frequency sensitivity factor) measured in Hz/V and \(m(t)\) is the message signal.

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