Development Of A High Voltage Frequency Short Pulse Generator For Novel Plasma Antenna

Plasma has very bright application prospects in the industry and the military field. Based on the special characteristics of plasma, the plasma antenna has a number of advantages over the traditional antenna. The all-optical plasma has an overwhelming advantage over the traditional plasma antenna in agility. The excimer lamp, which is based on the dielectric barrier discharge (DBD) principle, is an essential component of the all-optical plasma antenna. It is proved to be one of the most common methods in the industry to produce vacuum ultra-violet light. In order to achieve the dielectric barrier discharge, a high voltage, high frequency short pulses generator with fast rising edges is required.The first work of this paper is studying and representing the physical principles of DBD emission in detail, after that, the equivalent model of the discharge circuit is given. Using the actual size and the material parameters, the equivalent load capacitance of the circuit can be calculated. A calculation method of breakdown voltage has been derived considering the edge effect, and the experiment results in the references prove its correctness and validity. On this basis, the design specifications of the high-voltage high-frequency short-pulse generator are proposed. In order to fulfill the needs of the system demand, this paper details on the design of the short-pulse generator. The parameter analysis and functional analysis of the generator modules have been done. Based on the high voltage solid-state switch, this paper presents the short-pulse generator scheme of using high-voltage low duty ratio switches to build the 400kHz relatively high duty ratio switch. On this basis, this paper analyses the influences of the load circuit, source resistance and MOSFET parasitic capacitance to the switching speed and system energy lost, indicates that the switching speed of a single switch output pulse satisfies the multi-switches co-working speed requirements, and the multi-switches co-working method is studied.This paper has completed the structure design of the pulse generator and developed an experimental method to generate fast short-pulses. In low-voltage and medium-voltage working environments, the 400kHz continuous short pulses have been successfully generated. The high-voltage circuit diagram and waveform diagram have been simulated by Multisim, which testifies the scheme's validity.