Sideband and the Frequency Domain

What is Sideband? Whenever a carrier is modulated by an information signal, new signals at different frequencies are generated as part of the process. These new frequencies, which are called side frequencies, or sidebands, occur in the frequency spectrum directly above and directly below the carrier frequency. More specifically, the side bands occur at frequencies … Read more

Time Domain Versus Frequency Domain

Difference Between Time Domain and Frequency Domain Most of the signals and waveforms that we discuss and analyze are expressed in the time domain. That is, they are variations of voltage, current, or power with respect to time. All the signals shown in the previous illustrations are examples of time-domain waveforms. Their mathematical expressions contain … Read more