Chapter 11, Problem 12STP

To determine

The modulation in the lower wave from the illustration of two radio waves broadcast from radio station.

Explanation of Solution

Introduction:

From the given illustration, the waves are of two radio waves broadcast from radio station. Such waves are usually used in telecommunication. The lower wave is a modulated wave and is known as amplitude modulation (AM)

Amplitude modulation is a technique used in radio signals or telecommunication for transmitting information or data using a carrier wave. In amplitude modulation process, the amplitude of carrier wave is varied in accordance with the signal which is transmitted,

Conclusion:

Hence, the modulation in the lower wave is called amplitude modulation.