cascade-amplifier klystron

cascade-amplifier klystron

[ka′skād ‚am·plə‚fī·ər ′klī‚strän]
(electronics)
A klystron having three resonant cavities to provide increased power amplification and output; the extra resonator, located between the input and output resonators, is excited by the bunched beam emerging from the first resonator gap and produces further bunching of the beam.