The complex envelope of the bandpass signal x(t) = -√2[sin(π t/5)/(π t/5)]sin(π t - π/4), centered about f = 1/2 Hz, is

The phase response of a passband waveform at the receiver is given byφ(f) = −2πα(f − fc) − 2πβfcwhere fc is the centre frequency, and α and β are positive const...

Consider an FM signal f(t) = cos[2πfct + β1sin 2πf1t + β2sin 2πf2t]. The maximum deviation of the instantaneous frequency from the carrier frequency fc is