Feed forward linearized traveling wave tube
Patent 6177836 Issued on January 23, 2001. Estimated Expiration Date: 
May 7, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 7, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOperating point-stabilized linearized traveling wave tube amplifier Reduction of second order harmonic distortion in high power TWT amplifiers Patent #: 5838195 InventorsApplicationNo. 307199 filed on 05/07/1999US Classes:330/43, WITH TRAVELING WAVE-TYPE TUBE315/3.5, Traveling wave tube with delay-type transmission line330/136Bias control signal from input of amplifierExaminersPrimary: Pascal, RobertAssistant: Nguyen, Khanh P. Attorney, Agent or FirmInternational ClassH03F 003/58AbstractA 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.Other References
Field of SearchWITH TRAVELING WAVE-TYPE TUBEHUM OR NOISE OR DISTORTION BUCKING INTRODUCED INTO SIGNAL CHANNEL WITH AMPLIFIER BYPASS MEANS (E.G., FORWARD FEED) Bias control signal from input of amplifier Power amplifier Traveling wave tube with delay-type transmission line Traveling wave type with delay-type transmission line | |
