SECTION IX. KLYSTRON THEORY
1-33.
INTRODUCTORY INFORMATION
c. Because of its microwave high-power
handling capability, the multicavity klystron is used
a. The reflex klystron tube operates as a
in many microwave electronic systems such as in
low-power RF oscillator in the microwave region
tropospheric and ionospheric scatter systems and in
(from 1 GHz to 10 GHz). Because of its low power
satellite communications systems.
Multicavity
characteristic (1 watt or less), the reflex klystron's
klystrons are also used extensively in fixed radar
application is limited to receivers, test equipment
installations and in UHF television.
and low power transmitters.
1-34.
TYPICAL MULTICAVITY KLYSTRONS
b. The reflex klystron, however, is one of
the two basic types of klystrons within a large
a. Figure 30 shows two typical multicavity
klystron family. The other basic type is known as
klystrons. Their size and shape largely determine
the high-power multicavity klystron. Unlike the
their operating frequency and power handling
one-cavity reflex klystron, the multicavity klystron
capability. Smaller klystrons operate at higher
has two or more cavities.
frequencies and larger klystrons have the higher
power handling capability.
Figure 30. Typical multicavity klystrons.
344 L1
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