Title :
Metamaterial-enhanced resistive wall amplifiers
Author :
Rowe, Tyler ; Behdad, Nader ; Booske, John
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Wisconsin-Madison, Madison, WI, USA
Abstract :
The resistive wall amplifier (RWA) has been shown to be theoretically capable of very high gains. However, properties of the materials necessary to support the practical resistive medium significantly reduce the effective gain of the device. This work investigates a metamaterial-enhanced RWA. We demonstrate theoretically that the use of metamaterials in RWAs enables very high, near-theoretical gains.
Keywords :
UHF amplifiers; microwave metamaterials; microwave tubes; vacuum tubes; device effective gain; metamaterial enhanced resistive wall amplifiers; Admittance; Conductivity; Electron beams; Gain; Metamaterials; Permittivity; Space charge; electron tubes; high power microwaves; metamaterials;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223756
