Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Power regulator for intermittent use of traveling wave tube amplifiers in communications satellites










Image Number 4 for United States Patent #6909235.

A traveling wave tube (TWT) amplifier includes a beam forming electrode (BFE) and a BFE modulator having a bias-based keyer so that the TWT amplifier signals are keyed off during periods when RF power is not to be amplified. Biasing the beam forming electrode voltage off relative to cathode voltage effectively shuts down the electron beam without shutting down the power supply minimizes power supply stress and significantly improves reliability, so that low-level RF signal input is not amplified, and no significant RF power is output. Likewise, given that no amplification has taken place, no power associated with the TWT amplification function is consumed. Thus, the only power consumed by the TWT amplifier is that associated with the cathode heater and the electronic power conditioner (EPC) used as the electron beam source.








 
 
  Recently Added Patents
Nucleic acids for cloning and expressing multiprotein complexes
Systems and methods for managing and utilizing excess corn residue
Jewelry
Formwork release composition and use thereof
Synergistic fungicidal interactions of 5-fluorocytosine and other fungicides
Keypoint descriptor generation by complex wavelet analysis
Image processing apparatus
  Randomly Featured Patents
Flatware
Developing apparatus having a coated developing roller
Scanning apparatus and method for inspection of header tube holes
Dental tray light shield
Stable multi-part photographic color developing composition and method of use
Settable regulator device for gas/air mixture ratios
Method and apparatus for performing joint detection with a common midamble
Men's dress jacket
Liquid jet propelled transporter and launcher toy
System and method for processing data related to financial instruments for providing deferred income