Page 286 - Electromechanical Devices and Components Illustrated Sourcebook

248 Electromechanical Devices & Components Illustrated Sourcebook

Klystrons
Antenna
Mounting Klystrons are designed to produce high-power microwaves
Studs from a relatively low-power input. These tubes consist of a
beam tube with two toroidal resonator cavities. The tube has
a cathode and anode that are set up to produce a high-energy
Frame
electron beam. An RF signal is introduced into the left hand
cavity and, in turn, modulates the electron beam. The modu-
lated electron beam resonates in the right hand cavity and
Cooling Fins
Capacitor generates a modulated microwave output. These tubes are
Housing commonly used on military radar sets. Figure 14-20 shows a
schematic representation of a Klystron tube.
Power Connector

Figure 14-18 Commercial Magnetron Tube
RF Signal Input RF Power Output

Cavities

Electron Beam
Electron Beam

Cathode Filament
Supply Beam Tube
RF Output

Resonator Cavities Grid Supply Power Supply
Figure 14-19 Internal Magnetron Geometry Figure 14-20 Klystron Tube Schematic