What role does the transmitter perform in a communication system?

In a communication system, the transmitter plays a crucial role in transmitting information over distances by converting electrical signals into radio waves. This process involves taking the electrical signals that contain the encoded information, such as audio, video, or data, and modulating them onto a carrier wave. The transmitter then emits these radio waves into the atmosphere, allowing the signals to travel to a receiver where they can be demodulated back into their original form for further processing.

The conversion of electrical signals into radio waves is essential for wireless communication, enabling devices to communicate without the need for physical connections. This function is fundamental to the operation of radio, television, and various forms of wireless digital communications, making it a key component in the overall communication framework.