A 1Mhz - AM transmitter delivers a carrier power of 10 watts to a 50-ohm antenna. If the carrier is modulated by a 2 kHz audio signal; find: a. components of the AM signal b. Vmax and Vmin at 30% and 90% modulation c. Esp and Ec at 30% and 90% modulation таx d. Current at 30% and 90% modulation

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Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.