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
Per-request control of DNS behavior
Method of controlling mechanical mechanisms of optical storage apparatus for peak power/current reduction, and related optical storage apparatus and machine-readable medium
Compound containing a carbon or an oxygen isotope, preparation and use thereof, and composition comprising thereof
Maize hybrid X95C382
High frequency vertical spring probe
System for seeking for an optimal configuration of a bi-, tri- or multi-ventricular cardiac resynchronization implanted device
Creation and use of test cases for automated testing of media-based applications
  Randomly Featured Patents
Method and apparatus for speculatively locking objects in an object-based system
Process for producing a dental prosthesis
Method and apparatus for source and receiver side wave field separation
Zero thermal budget manufacturing process for MOS-technology power devices
Fishing lure storage device and method of use thereof
System and method of generating business case models
Signal recording apparatus
One hand key shell
Vehicle security system with inductive coupling to a vehicle having a data communications bus and related methods
Trigger mediation system