Fabrication and test of a high power s-band metamaterial backward-wave oscillator

Author

Hummelt, Jason ; Lewis, Samantha ; Haoran Xu ; Shapiro, Michael ; Mastovsky, Ivan ; Temkin, Richard

Author_Institution

Plasma Sci. & Fusion Center, Massachusetts Inst. of Technol., Cambridge, MA, USA

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

2

Abstract

This paper presents the experimental demonstration of a high power backward-wave oscillator (BWO) that uses a negative index mode in a waveguide filled with a metamaterial (MTM). The MTMBWO uses a 500 keV, 80 A electron beam. Initial tests of a 352 mm long metamaterial structure generated 40 W of power at 2.83 GHz. The measured frequency vs. electron beam voltage is in very good agreement with theory. Tests of a longer structure designed to produce over 1 MW of microwave power are scheduled to begin in Spring 2015. To our knowledge, this is the first experimental demonstration of a high power microwave source utilizing an MTM structure.

Keywords

backward wave oscillators; electron beams; microwave metamaterials; MTMBWO; backward-wave oscillator; current 80 A; electron beam; electron volt energy 500 keV; frequency 2.83 GHz; high power S-band metamaterial; microwave power; negative index mode; power 40 W; Frequency measurement; Metamaterials; Microwave amplifiers; Microwave measurement; Microwave oscillators; backward-wave oscillator; high power microwaves; metamaterial;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference (IVEC), 2015 IEEE International

Conference_Location

Beijing

Print_ISBN

978-1-4799-7109-1

Type

conf

DOI

10.1109/IVEC.2015.7223771

Filename

7223771