Modulators can be divided into digital modulators, analog modulators;
Analog modulators can be classified according to different classification criteria:
According to the frequency of residual sidebands, double sidebands can be divided into: adjacent frequency modulator, frequency divider modulator;
Frequency processing can be divided into: IF processing modulator, high-frequency processing modulator;
Adjustable according to frequency can be divided into: agile frequency modulator, fixed frequency modulator;
According to level can be divided into: standard modulator, professional modulator, broadcast modulator
According to the number of integrated circuits can be divided into: single-channel adjacent modulator, 4-channel modulator, 8-channel modulator, 16-channel modulator.