What are all sum frequencies generated during modulation known as?

During modulation, all sum frequencies generated are referred to as the upper sideband. This phenomenon occurs when a carrier wave is modulated by a signal, leading to the creation of new frequencies. Specifically, in amplitude modulation, the upper sideband consists of the frequencies that are the sum of the carrier frequency and the frequencies of the modulating signal.

The significance of the upper sideband lies in its role in carrying the information being transmitted. It represents the frequencies that encode the data, allowing for effective communication over various distances. The modulation process effectively expands the frequency spectrum, enabling the transmission of information in a form suitable for radio waves and other communication channels.

Understanding the upper sideband is crucial for those involved in telecommunications and broadcasting, as it highlights the importance of frequency management in signals and the effective utilization of the radio frequency spectrum.