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
Sound producing apparatus for vehicle
Wide bandwidth hybrid antenna for combination EAS and RFID label or tag
Fuel cell and a method of manufacturing a fuel cell
Apparatus and methods for color displays
System or method to assist and automate an information security classification and marking process for government and non-government organizations for information of an electronic document
Targeted gene deletions for polysaccharide slime formers
Methods, systems, and physical computer storage media for processing a plurality of input/output request jobs
  Randomly Featured Patents
Apparatus for testing semiconductor devices
Method for use in achieving velocity optimization for a printhead
Coupling apparatus
Hanger-retaining clamp for garment bags
Electron storage source for electron beam testers
LED lamp
Efficient data association with multivariate Gaussian distributed states
Dispenser for dental floss and the like
Wiring fault detection, diagnosis and reporting for process control systems
Graphic arts film dryer