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

Frequency and Bandwidth Agile Pulser for Use in Wideband Applications .Po"qoGy  
J. Scott Tyo, Michael C. Skipper, Michael D. Abdalla, Samuel P. Romero and Brett qHtQ4_Zn;  
Cockreham =KRM`_QShg  
Abstract z^Q'GBoBA  
We have developed an architecture to produce a wideband pulser that is tunable in the important parameters N(/)e  
of pulse width, band width, and center frequency. The pulser is based on a parallel plate Blumlein pulse forming Hxu5Dx5![  
network (PFN) with a movable center (charge) conductor. When the center conductor is displaced from the ideal wjarQog5Y  
Blumlein position, the balance in the PFN is lost, resulting in a slightly ringing waveform that can be tuned. By XN<SKW(H3  
selecting the amount of ringing, the output bandwidth of the PFN can be adjusted. Furthermore, by simply sliding b F=MQ  
the center conductor out of the PFN, the effective electrical length can be adjusted, allowing the fundamental period [g}Cve#i  
of the ringing waveform to be altered, thereby changing the center frequency of the output waveform. Our pulser ,5DJ54B!  
is designed to operate in the range of 300 MHz to 2 GHz, but the architecture is scalable outside this range. In this dj gk7  
paper, we present design and simulation results, low voltage tests, and preliminary high voltage (15 kV) data that 'C+cQLig@  
is obtained with a pressurized gas trigatron designed speci£cally for this test £xture. The pulser is being designed &(F c .3m  
for laborator .. V>6klA}o
 
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