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
Knee guard
Process for the enzymatic reduction of enoates
Specializing disambiguation of a natural language expression
Masking method and apparatus
Probe for ultrasound diagnostic apparatus
Ultrathin fluid-absorbent cores
Reception circuit and signal reception method
  Randomly Featured Patents
Liquid crystal display device with reflective material that hides switching material
Portable apparatus having a slide mechanism for an upper casing and a lower casing
Gas-fired cooking apparatus
Apparatus and method for providing communication services using multiple signaling protocols
Passive constraint for aerodynamic surfaces
Shower hook
Liquid crystal display and fabricating method thereof
Method of straightening backplane-supported pins
Communication headset