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Marx generator charged via biperiodic resonant cascaded transformers

Author: Rudolf H Potter; Indiana University, Bloomington. Department of Physics.; Indiana University, Bloomington,
Publisher: [Bloomington, Indiana] : Indiana University ; Ann Arbor : ProQuest, UMI Dissertations Publishing, 2017.
Dissertation: M.S. Indiana University 2017 Thesis
Edition/Format:   Thesis/dissertation : Document : Thesis/dissertation : eBook   Computer File : English
Publication:Masters Abstracts International, 57-02(E).
Summary:
In this work, a novel method for charging solid state Marx generators is described for the first time. We first review the utility of modulators for powering high power microwave devices. The principal of operation of the Marx generator is then described starting with the classic topology and leading to solid state topologies. The concept of a generalized Marx generator is introduced and several methods of charging  Read more...
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Details

Genre/Form: Academic theses
Material Type: Document, Thesis/dissertation, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Rudolf H Potter; Indiana University, Bloomington. Department of Physics.; Indiana University, Bloomington,
ISBN: 9780355554519 0355554518
OCLC Number: 1085542825
Notes: "Department of Physics, Indiana University."
Source: Masters Abstracts International, Volume: 57-02M(E).
Advisors: David H. Whittum; Shyh-Yuan Lee.
Description: 1 online resource (vii, 70 pages) : illustrations
Responsibility: Rudolf H. Potter.

Abstract:

In this work, a novel method for charging solid state Marx generators is described for the first time. We first review the utility of modulators for powering high power microwave devices. The principal of operation of the Marx generator is then described starting with the classic topology and leading to solid state topologies. The concept of a generalized Marx generator is introduced and several methods of charging are discussed. A resonant cascaded transformers topology emerges from this discussion. Resonant modes are discussed and the topology is refined to take advantage of the pi/2 mode leading to the circuit that is the focus of this work. We begin our analysis of this circuit by considering the corresponding infinite biperiodic system and derive the characteristic dispersion relation. Motivation for closing the stopband is discussed and benefits of the pi/2 mode are noted. We proceed next to derive the matrix equation for the corresponding lossless system of coupled oscillators. To test and verify the analytic work, a five cell benchtop prototype of the charging system is built and its resonant modes are determined empirically. Capacitors in odd numbered resonators are each connected to the input of a voltage doubler circuit and high voltage dc is generated. A MOSFET is added to the output of each doubler circuit and pulsed output is demonstrated. A SPICE simulation of the physical circuit is created. The mode frequencies from the simulation are in good agreement with those measured and calculated. A practical high-power design is considered for the E2V/Teledyne MG7095 magnetron and simulated in SPICE.

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