The pulse modulator consists of four parts: charging power supply part, energy storage part, switch part and pulse forming part.
The charging power supply is used to convert the primary power supply into a DC power supply that meets the requirements (or an AC power supply that meets the requirements in some special cases). The function of the energy storage part is to store energy into certain elements, such as capacitors, inductors or artificial wires, and reduce the peak power requirements of the power supply part. The switch directly determines some parameters of the final output pulse. By controlling the closing and opening of the switch, the energy storage unit discharges the load (RF transmitter) to form an output pulse with a certain voltage, power, pulse width and pulse waveform parameters. In some high voltage and high current devices, switches are often required to have high working voltage and current passing capacity. Repetitive frequency switching technology is widely used in the pulse modulator technology of repetitive frequency. The most mature high-power pulse modulator is the MarX generator.
Application of pulse modulator:
radar transmitter There are two kinds of pulse modulators commonly used in, one is the capacitor energy storage partial discharge modulator with rigid switch, the other is the artificial line modulator with soft switch. 
