An 8-mm Klystron Power Oscillator

The development of a cw klystron oscillator as a low-noise transmitter for the 8-mm band is described, and details are given of its performance. The power in the electron stream is 350 watts (0.1 ampere at 3,500 volts) and the output power 12 w. Special features include a design for a bakeout temperature of 700°C, using molybdenum-sealing aluminosilicate glass, and a high convergence electron-optical system, permitting the use of a sprayed-oxide cathode with 1000-hour life.