# Travelling Wave Tube Amplifier

Travelling Wave Tube Amplifier

Travelling wave tube amplifier is basically an amplifier, which makes use of a distributed interaction between travelling wave and electron beam. It is necessary for interaction that they are both travelling in the same direction with the same velocity. The interaction between the RF field and moving electrons will tack place only when the velocity of RF fields is retarded by some means. This is achieved by the slow-wave structure.