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
Multilevel directory assistance apparatus and method
Traffic signal mapping and detection
Digital-to-analog converter and performing method thereof
Bioactive agent-loaded heart-targeting nanoparticles
Switched capacitor hold-up scheme for constant boost output voltage
Feedback method and processing system for policy installation failures
Systems and methods for providing power and data to lighting devices
  Randomly Featured Patents
Adaptive word line pull down
Multi-disc brake pad
Real-time three-dimensional imaging technique
Identification of a new Ehrlichia species from a patient suffering from Ehrlichiosis
Structural fuel cells and components thereof
Complex objective lens, optical head, optical information apparatus, computer, optical disk player, car navigation system, optical disk recorder, and optical disk server
Solid-state, color-encoding television camera
Rotary valves for brass wind instruments
Fuel cell stack having bent section flow passage grooves
Optical fiber tap handling tray