Title :
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
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;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223771
