helix tube

helix tube

[′hē‚liks ‚tüb]
(electronics)
A traveling-wave tube in which the electromagnetic wave travels along a wire wound in a spiral about the path of the beam, so that the wave travels along the tube at a velocity approximately equal to the beam velocity. Also known as helical traveling-wave tube.
References in periodicals archive ?
Coupled-cavity tubes provide less bandwidth than helix tubes, but they are capable of producing much higher peak and average power levels.