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An RF beam refers to a directed or focused radio frequency signal that is used for wireless communication or radar purposes. It is a concentrated stream of electromagnetic waves in the radio frequency spectrum. RF beams are often used to establish wireless connections over long distances with high accuracy and signal strength.

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Q: What is RF beam?
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Velocity modulation in a klystron involves the interaction between the electron beam's velocity and the RF field to produce amplification. Current modulation, on the other hand, involves varying the electron beam's current to control the amplification of the RF signal. In summary, velocity modulation affects the electron beam's speed, while current modulation affects the electron beam's density in a klystron.


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