Operating point-stabilized linearized traveling wave tube amplifier
Reduction of second order harmonic distortion in high power TWT amplifiers Patent #: 5838195
ApplicationNo. 307199 filed on 05/07/1999
US Classes:330/43, WITH TRAVELING WAVE-TYPE TUBE315/3.5, Traveling wave tube with delay-type transmission line330/136Bias control signal from input of amplifier
ExaminersPrimary: Pascal, Robert
Assistant: Nguyen, Khanh P.
Attorney, Agent or Firm
International ClassH03F 003/58
AbstractA feed-forward linearization of a traveling wave tube amplifier linearizes the transfer function of the tube through a linearization voltage derived at baseband from the instantaneous amplitude of the input signal to control the cathode voltage causing induced phase modulation to offset the normal amplitude modulation to phase modulation conversion distortion. The feed forward linearization control results in reduced distortion for improved phase linearization of the tube over the operating range of the tube.
Field of SearchWITH TRAVELING WAVE-TYPE TUBE
HUM OR NOISE OR DISTORTION BUCKING INTRODUCED INTO SIGNAL CHANNEL
WITH AMPLIFIER BYPASS MEANS (E.G., FORWARD FEED)
Bias control signal from input of amplifier
Traveling wave tube with delay-type transmission line
Traveling wave type with delay-type transmission line