A frequency-locked, high power, X-band dielectric Cerenkov maser

Author

Main, William T. ; Garate, Eusebio ; Weatherall, James C. ; Cherry, Randall

Author_Institution

Lab. for Plasma Res., Maryland Univ., College Park, MD, USA

Volume

20

Issue

3

fYear

1992

fDate

6/1/1992 12:00:00 AM

Firstpage

281

Lastpage

287

Abstract

A high-power frequency-locked dielectric Cerenkov maser oscillator is presented. The device consists of an annular electron beam traveling down a dielectric-lined waveguide (wall radius 1.74 cm, liner thickness 2-3 mm, linear ∈=10). A 100 kW input signal is injected into the drift tube between the diode and liner, through a rectangular TE₁₀ to cylindrical TM₀₁ mode converter. When operated with a beam current of 500 A and a total output power of 13 MW, the device displays no RF quenching through the full width of the 100 ns beam pulse. Two higher current cases with power as high as 280 MW but severe RF quenching are presented. The results are compared with linear theory, and quenching mechanisms are discussed

Keywords

Cherenkov radiation; masers; 100 ns; 13 MW; 280 MW; 500 A; 7.5 to 10.3 GHz; RF quenching; SHF; X-band; annular electron beam; beam current; cylindrical TM₀₁; dielectric Cerenkov maser oscillator; dielectric-lined waveguide; drift tube; frequency-locked; high power; linear theory; mode converter; rectangular TE₁₀; Dielectric devices; Diodes; Displays; Electron beams; Masers; Oscillators; Power generation; Radio frequency; Space vector pulse width modulation; Tellurium;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.142829

Filename

142829