Design of an Ultra-Short Pulse Generator

An ultra-short pulse generator is presented, whose frequency, pulse width and amplitude are tunable. The design method is based on Marx circuit, which is made up of avalanche transistors mainly. The paper describes the avalanche transistor´s characteristic, the basic pulse circuit, the generator´s working principle and the selection of components in detail. Finally, the simulation and experimental results are shown and they are in accordance with each other perfectly. With the features such as simple structure, stable and reliable performance and low cost, the ultra-short pulse generator can be applied in ultra-wideband wireless communication system.