Klystron amplifiers have proven to be readily adapted to long pulse operation by means of a modulating anode. Several tube designs have been developed in the past which incorporated guns of the modified Pierce type wherein the anode is isolated from the body of the tube and designed such that it selves as a control electrode to switch the beam current on and off. Generally speaking these tube designs have proven successful. Modulating anode-type tubes can be built which minimize the intercepted current on the isolated anode thereby reducing the amount of power required for the pulser or modulator.
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- Hollow-beam klystron with modulating anode
James N. Lind
- Macmillan Education UK