[仿真]Frequency and Bandwidth Agile Pulser for Use in Wideband Applications

Frequency and Bandwidth Agile Pulser for Use in Wideband Applications 6lm<>
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J. Scott Tyo, Michael C. Skipper, Michael D. Abdalla, Samuel P. Romero and Brett >W6?!ue_  
Cockreham skF}_  
Abstract fuT Bh6w&  
We have developed an architecture to produce a wideband pulser that is tunable in the important parameters L5wR4Ue)  
of pulse width, band width, and center frequency. The pulser is based on a parallel plate Blumlein pulse forming y=2nV  
network (PFN) with a movable center (charge) conductor. When the center conductor is displaced from the ideal AEd9H
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Blumlein position, the balance in the PFN is lost, resulting in a slightly ringing waveform that can be tuned. By m[nrr6 G"  
selecting the amount of ringing, the output bandwidth of the PFN can be adjusted. Furthermore, by simply sliding XZ:6A]62I  
the center conductor out of the PFN, the effective electrical length can be adjusted, allowing the fundamental period +t8#rT ^B  
of the ringing waveform to be altered, thereby changing the center frequency of the output waveform. Our pulser C$d b)5-  
is designed to operate in the range of 300 MHz to 2 GHz, but the architecture is scalable outside this range. In this D%=j@  
paper, we present design and simulation results, low voltage tests, and preliminary high voltage (15 kV) data that Z3f}'vr  
is obtained with a pressurized gas trigatron designed speci£cally for this test £xture. The pulser is being designed c#Qlr{ES  
for laborator .. Ud_0{%@  
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