Resources Contact Us Home
Reduction of second order harmonic distortion in high power TWT amplifiers

Image Number 5 for United States Patent #5838195.

Second harmonic distortion of a traveling wave tube amplifier with a bandwidth exceeding one octave is efficiently minimized by generating a low-power second harmonic signal, modifying it by an adaptive filter, and adding the modified second harmonic signal to the fundamental frequency input signal to the TWT. The adaptive filter is controlled by a feedback loop from the output of the TWT and is arranged to minimize the correlation between the generated second harmonic signal and the second harmonic content of the TWT output. Intermodulation distortion is eliminated in a similar manner.

  Recently Added Patents
Method and system to generate finite state grammars using sample phrases
Diameter signaling for mobile IPv4
Eyeglass component
Coreference resolution in an ambiguity-sensitive natural language processing system
Processing biomass
Semiconductor device, method of manufacturing semiconductor device, and electronic apparatus
Radiation protective garment with forced ventilation and method
  Randomly Featured Patents
Integrated circuit for use in a playback apparatus
Tractor hitch position control system
Method and apparatus for attaching a circuit component to a printed circuit board
Negative strand RNA virus replicon
Pair of gloves
Bottle identifying tag
Process for efficient microwave hydrogen production
Adaptive system for fan management
Medical device having resistance welded connections