Microwave Communication
The Gunn diode oscillator

Operates over a positive resistance characteristic
Generates frequencies which are below 100 MHz
Is capable of generating continuous microwave power of the order of kilowatt
Depends on the formation of charge domain

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Microwave Communication
In a pulsed radar set, the STC circuit is used to

Improve the target bearing resolution
Increases receiver sensitivity for echoes from targets
Vary the pulse frequency in order to control the maximum target
Reduce interference from the effects of sea return

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