(Solved): An Amplitude Modulation (AM DSBFC) radio broadcasting station with its carrier frequency of 750 k ...

An Amplitude Modulation (AM DSBFC) radio broadcasting station with its carrier frequency of 750 kHz is amplitude-modulated by a 4 kHz audio signal to produce an AM envelope. The maximum and minimum peaks voltages of the envelope are 180V, and 70V, respectively. The equivalent resistance of the transmitting antenna is 60. Determine: (i) The peak amplitudes of the audio, carrier sideband voltages and modulation index. (ii) Using the above results, write the complete AM mathematical representation to express the waveform, showing its carrier, lower sideband and upper sideband parameters. (iii) The power of the carrier signal, total sidebands power and the bandwidth of the signal. Then sketch and label the power spectrum of the modulated modulated signal. (iv) If the transmission is changed to Single-Side Band Suppressed Carrier (SSBSC), calculate the percentage power saving in comparison to the original AM DSBFC.