What is the role of a bandwidth limiter in a communication system?

A bandwidth limiter plays a critical role in communication systems by restricting the frequency range of a signal. This function is essential for several reasons, particularly in managing the quality and integrity of communication signals. By limiting the bandwidth, it ensures that the system only processes frequencies within a specified range, effectively minimizing interference from unwanted signals outside this range.

In practical terms, this limitation can improve the overall performance of the communication link by reducing noise and ensuring that the system remains focused on the intended frequency bands. Without bandwidth limiting, signals could become cluttered with extraneous frequencies that can lead to poor transmission quality or even signal distortion. Such selective frequency management is vital in various applications, including radio communications, data transmission, and networking, where maintaining a clear and stable signal is paramount for successful communication.