Title :
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
fDate :
6/1/1992 12:00:00 AM
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;
Journal_Title :
Plasma Science, IEEE Transactions on
