Frequency mixers

process of encoding information by varying properties of a periodic carrier waveform

nonlinear electrical circuit that creates new frequencies from two signals applied to it

thumb|upright=1.5|Frequency mixer symbol used in schematic diagrams. Here, the input signal consists of signals at multiple frequencies, which are mixed to create the output signal that are signals at new frequencies.

vacuum tube with seven electrodes – cathode, anode, and five grids

electronic frequency mixer

electronic amplifier that varies its gain depending on a control voltage

nonlinear optics intermodulation phenomenon whereby interactions between two or three wavelengths produce two or one new wavelengths

frequency mixing function in signal processing

device that multiplies two analog signals

Specific figure of merit in telecommunications