1) American invention 2) Electron tube 3) Thermionic tube 4) Thermionic vacuum tube 5) Thermionic valve 6) Tube 7) UFO tube 8) Vacuum tube 
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russel and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons ...
thermionic electron tube that generates or amplifies microwaves by controlling the speed of a stream of electrons. The electrons are originally ... [8 related articles]
microwave generator
a linear-beam tube containing at least one drift space and in which the space-charge waves interact with stationary radio-frequency fields that are confined to one or more interaction gaps
A microwave travelling wave tube power amplifier used in transmitters. 
A klystron is a thermionic tube suitable for use as a microwave amplifier or oscillator, in which the electron stream is velocity-modulated.
[n] - an electron tube used to generate or amplify electromagnetic radiation in the microwave region by velocity modulation
klystron 1. An electron tube used to amplify or generate ultrahigh frequency by means of velocity modulation. 2. An electron tube that uses an electric field to generate and amplify microwaves.
An evacuated electron tube used as an oscillator or amplifier at microwave frequencies. In the klystron, an electron beam is velocity modulated (periodically bunched) to produce large amounts of power. See also: Electron.
noun an electron tube used to generate or amplify electromagnetic radiation in the microwave region by velocity modulation
An evacuated tube used as an oscillator or amplifier at microwave frequencies. In the klystron, an electron beam is velocity modulated (periodically bunched) to produce large amounts of power
a brand name for a vacuum tube containing an electron gun, a resonator that changes the velocity of the electron beam in accordance with a signala drift tube in which the electron velocity does not change, another resonator that abstracts energy from the electron beamand an electrode that collects the electronsIt has several ultra-high-frequency......