PPPS-2007: Design and testing of a vector inversion generator operating as a RF oscillator

In 1964, Fitch and Howell [1] first described the vector inversion generator (VIG) as a means of converting capacitively stored energy into a high voltage transient. Since that time, they have periodically been studied for a number of applications such as x-ray generators, high-power RF sources, and trigger generators. [2-6] In our laboratory, these devices have been revisited and studied for a variety of applications. In this work, we will describe the use of the vector inversion generator as a means of producing a high power RF burst from internally stored energy in the VIG in a one step dynamic process. We will give a simple theoretical description of the vector inversion generator, based on ideal assumptions and extract from the simple treatment design guidelines which can be used to develop a RF generator controlled by the experimenter over a wide range of HF frequencies. In this work, we will describe the limits to frequency that can be obtained with a modest amount of energy within the context of minimal weight and volume. Examples of experimental devices will be presented and discussed in terms of the design guidelines.