Model and Simulation of a New Ultra-Narrow Trigger Frequency Alterable Pulse Generator

• 作 者: 杨运峰 曹振新 叶展 窦文斌 苏宏艳
• 机 构: State Key Laboratory of Millimeter Waves,Southeast University,National Key Laboratory of Millimeter
• 出 处: Journal of Shanghai Jiaotong University(Science)
• 发表日期: 2011年06期
• 关键词: shaping wideband inexpensive falling subdivided Trigger generator receivers narr

Two new kinds of ultra-narrow trigger frequency alterable picosecond pulse generator are presented.One can produce positive pulses and the other can produce negative pulses.The two pulse generators are subdivided into three parts:signal driving circuit,differentiator network and pulse shaping circuit.The pulse shaping circuit is made of step recovery diode(SRD) and short-circuit microstrip line.A positive pulse with width of 54 ps(50%-50%),rising time of 30 ps(10%-90%) and falling time of 32 ps(90%-10%),and a negative pulse with width of 54 ps(50%-50%),rising time of 30 ps(90%-10%) and falling time of 30 ps(10%-90%) are achieved in simulation.All of the components are ready-made and inexpensive.They can be applied in ultra-wideband(UWB) communication system,such as transmitters and receivers.

Two new kinds of ultra-narrow trigger frequency alterable picosecond pulse generators are presented. One can produce positive pulses and the other can produce negative pulses. The two pulse generators are subdivided into three parts: signal driving circuit, differentiator network and pulse shaping circuit. The pulse shaping circuit is made of step recovery diode (SRD) and short-circuit microstrip line. A positive pulse with width of 54 ps (50% -50%), rising time of 30 ps (10% -90%) and falling and a negative pulse with a width of 54 ps (50% -50%), rising time of 30 ps (90% -10%) and falling time of 30 ps (10% -90%) are achieved in simulation. All of the components are ready-made and inexpensive. They can be applied in ultra-wideband (UWB) communication systems, such as transmitters and receivers.