Patent ID: 6177836
Filing Date: 2001-01-23
Classification: H03F

Abstract:
A linearized traveling wave tube amplifier (TWTA) for amplifying an input signal at an input terminal into an output signal at an output terminal for driving an arbitrary load, the linearized TWTA comprises,a traveling wave tube (TWT) having an intrinsic transfer function between an input for receiving the input signal and an output for driving the load, the TWT has a control terminal between the input terminal and the output terminal for controlling amplification when amplifying the input signal into the output signal, the intrinsic transfer function provides a nonlinear phase response of the TWT between the input signal and the output signal,a detector for sensing the input signal and for providing a sensed input signal, anda preamplifier having a preamplifier transfer function for receiving the sensed input signal and providing a correction signal, the correction signal is coupled to the control terminal, the preamplifier transfer function is matched to the intrinsic transfer function of the TWT to produce a complete transfer function of the TWTA having a linearized phase response between the input signal and output signal.