Electrical and Computer Engineering ETDs

Publication Date

Spring 3-11-2025

Abstract

The University of New Mexico (UNM) is working on developing a multi-stream Traveling Wave Tube (TWT) amplifier. One of the first steps to be taken during the design of a TWT amplifier is to design an input coupler to couple power from a lower power High Power Microwave (HPM) seed source to the slow wave structure (SWS) of the amplifier. In order to aid in the development of a TWT which operates in X-band, multiple options for input couplers have been designed for use in a greater TWT project at UNM. The primary tasks to be addressed with these input coupler designs are: converting HPM in the TE10 propagating mode in a rectangular waveguide to that of a TM01 mode in circular waveguide, and ensuring that this coupling can occur for a sufficient bandwidth for the application. This thesis explores multiple options for input coupler designs as well as exploring some of the concepts behind the ongoing two-stream TWT project.

Keywords

High Power Microwave, Traveling Wave Tube, Input Coupler, Two-stream Instability

Sponsors

AFOSR MURI Grant FA9550-20-1-0409

Document Type

Thesis

Language

English

Degree Name

Electrical Engineering

Level of Degree

Masters

Department Name

Electrical and Computer Engineering

First Committee Member (Chair)

Dr. Edl Schamiloglu

Second Committee Member

Dr. Jane Lehr

Third Committee Member

Dr. Christos Christodoulou

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