Patent ID: 6483243
Filing Date: 2002-11-19
Classification: H01J

Abstract:
A traveling wave tube capable of operating as an amplifier in plural frequency bands, comprising a microwave line along which electrons travel and in which a signal is amplified, wherein the microwave line comprises, in succession, a microwave line input section separated from a succession of gapped microwave line output sections, each output section having a respective working band corresponding to one of the plural frequency bands of the traveling wave tube, in which band it behaves as an amplifier, wherein;the microwave line input section is connected at one end to input means for injecting the signal to be amplified and having a working frequency band encompassing the plural frequency bands of the traveling wave tube, in order to preamplify the signal to be amplified, and the succession of output sections receive the preamplified signal and are configured to let the frequencies lying outside its respective working band pass, virtually without any action, to a following section, each of the output sections being connected by an output end to output means for extracting the amplified signal.