High-power MMW sheet beam amplifiers

Author

Pasour, John ; Nguyen, Khanh ; Wright, Edward ; Pershing, Dean ; Abe, David ; Balkcum, Adam ; Wood, Frank ; Myers, Robert ; Cook, Alan ; Hanna, Jeremy ; Cooke, Simon ; Levush, Baruch

Author_Institution

US Naval Res. Lab., Washington, DC, USA

fYear

2015

fDate

27-29 April 2015

Firstpage

1

Lastpage

2

Abstract

NRL has developed and demonstrated a unique sheet-beam electron gun, which produces a 3.5-4-A, 0.3 × 4 mm electron beam at ~20 kV. This electron beam has been successfully used to power multi-kW amplifiers at both Ka and W bands. The devices developed thus far employ a permanent magnet solenoidal field of 6 - 8 kG to transport the electron beam through the interaction circuit. While a periodic permanent magnet (PPM) structure would be much more compact, some compromises in performance are required to utilize PPM focusing. We will discuss some of the design considerations and requirements for high-power sheet beam amplifiers and review some key features of the amplifiers demonstrated thus far.

Keywords

electron beams; electron guns; millimetre wave amplifiers; power amplifiers; Ka bands; W bands; current 3.5 A to 4 A; electron beam; high-power MMW sheet beam amplifiers; periodic permanent magnet; sheet-beam electron gun; size 0.3 mm; size 4 mm; voltage 20 kV; Cavity resonators; Electron beams; Focusing; Linearity; Magnetic tunneling; Permanent magnets; Power measurement; EIK; Neptune; Sheet beam; TWT; amplifier; coupled-cavity; millimeter wave; vacuum electronic;

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.2015.7223811

Filename

7223811