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The simplest klystron tube is the two-cavity klystron. In this tube there are two microwave cavity resonators, the "catcher" and the "buncher". When used as an amplifier, the weak microwave signal to be amplified is applied to the buncher cavity through a coaxial cable or waveguide, and the amplified signal is extracted from the catcher cavity.
English: Microwave oscillator using a klystron tube, in 1944. The klystron invented in 1937 by the Varian brothers, is a microwave amplifying tube in which a radio wave is amplified by absorbing kinetic energy from a beam of electrons. It was widely used in radar sets during WW2 and today is used in microwave radio links and particle accelerators.
There are a number of RF amplifier tubes that operate in a similar fashion to the TWT, known collectively as velocity-modulated tubes. The best known example is the klystron. All of these tubes use the same basic "bunching" of electrons to provide the amplification process, and differ largely in what process causes the velocity modulation to occur.
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Description: w:Klystron tube found at the w:Canberra Deep Space Communications Complex.This is a high power microwave oscillator tube. I took this photo on a university trip.
The cavity serves as the resonant circuit of an oscillator using the triode vacuum tube inside. Parts: (1) A setscrew trimmer capacitor used to adjust the frequency (2) The top of the GS13-1 (Russian: ГС-13-1 [1]) triode which generates the microwaves (3) A wire coupling loop from which the output power is taken
The reflex klystron is a klystron utilizing only a single apertured cavity resonator through which the beam of charged particles passes, first in one direction. A repeller electrode is provided to repel (or redirect) the beam after passage through the resonator back through the resonator in the other direction and in proper phase to reinforce ...
The inductive output tube (IOT) or klystrode is a variety of linear-beam vacuum tube, similar to a klystron, used as a power amplifier for high frequency radio waves. It evolved in the 1980s to meet increasing efficiency requirements for high-power RF amplifiers in radio transmitters. [ 1 ]