Resources Contact Us Home
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
Method and apparatus for reducing cost of optical amplification in a network
Spray drying vancomycin
Rechargeable battery
Electronic device
Editing device and editing method
Noise suppression in speech signals
Preferential selection of candidates for delta compression
  Randomly Featured Patents
DC motor constant speed PWM control
Solar energy flux integrator
Closed circuit television apparatus for remotely controlling television cameras
Plasma display panel and method of driving the same capable of increasing gradation display performance
Film transfer device
Harvesting machines
Network routing table
Carrier and carrier system for vehicle
Ion-induced nuclear radiotherapy