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
Device and method to automatically configure port forwarding
Bisphosphonate compounds
Distortion compensation device, distortion compensation method, and radio transmitter
Compositions and methods for activating innate and allergic immunity
Die seal ring
Functional component compensation reconfiguration system and method
Semiconductor device having a triple gate transistor and method for manufacturing the same
  Randomly Featured Patents
Label sleeve for medication dosage reminder and confirmation systems
Extensible crank
Disinfectant and method of use
Apparatus for facilitating roadway grade measurements
Recovery of base materials from geothermal brines
Current probe device having an integrated amplifier
Ablation and imaging catheter
Method for determining whether a liquid is properly stirred
Apparatus for generating electromagnetic waveforms
Yarn winding apparatus of automatic bobbin changing type