Modulation is the process of modifying a base signal with a carrier signal, and it is used mostly in the transmission of data from one point to another. There are two basic types of modulation namely,...

Communication System

Extracted text: Modulation is the process of modifying a base signal with a carrier signal, and it is used mostly in the transmission of data from one point to another. There are two basic types of modulation namely, analogue modulation and digital modulation. The main difference between the two methods is in the manner that they transmit data. a) In analog modulation known as Frequency Modulation, the input carrier frequency to a frequency modulator is a 570 kHz signal with an amplitude of 30 V. At the output of this modulator, this signal has been deviated for 9 kHz from its original value. Given the modulation index, mf of the system = 3. i. Calculate the value of modulating signal frequency. ii. Construct the general equation for the output signal of this frequency modulator circuit. iii. Using Bessel Table, indicate the number of sideband pairs produced. iv. Calculate the amplitudes of the modulated output wave Sketch and label the voltage spectrum of the modulated wave v.