What term refers to the band of frequencies that contains power as a result of the modulation process?

The term that refers to the band of frequencies that contains power as a result of the modulation process is frequency sidebands. When a carrier signal is modulated, it generates additional frequencies in the form of sidebands around the carrier frequency. These sidebands represent the modulation's information content and are essential for the transmission of the signal.

In amplitude modulation (AM), for instance, the sidebands consist of both the upper and lower sidebands, which collectively encapsulate the information being transmitted. The bandwidth of the modulated signal is typically determined by the frequencies of these sidebands.

Understanding the concept of frequency sidebands is crucial in communications, as it directly relates to how information is encoded and transmitted through various modulation techniques. This highlights the importance of sidebands in effectively conveying the intended message through modulation.