Resources Contact Us Home
System and method for minimizing dissipation in RF power amplifiers

Image Number 6 for United States Patent #6683496.

The variable power supply to an amplifier in an electrical circuit is dynamically controlled through the use of a lookup table responsive to one or more operating conditions of the electrical circuit. The lookup table is indexed by one or more of the operating conditions and the amount of amplification to be applied to an input signal to the amplifier is determined. One embodiment of the invention comprises a television transmitter circuit including a power amplifier circuit capable of amplifying a variable frequency COFDM or 8VSB input signal where the amount of amplification applied to the input signal is dynamically controlled through the use of a lookup table as a function of the frequency of the input signal.

  Recently Added Patents
Portable electric circular saw
Semiconductor device having a bonding pad and shield structure of different thickness
Flexible pouch
Device and method for producing a fluidic connection between cavities
Profiling activity through video surveillance
Dynamic bar oriented user interface
  Randomly Featured Patents
Variable-capacity control for refrigerating cycle without using a large pressure control valve
Method of manufacturing toner, toner obtained by method thereof, one-component developer, two-component developer, developing device, and image forming apparatus
Injection compression molding method and injection compression molding machine
Ultrasound transducer head with integrated variable-gain amplifier devices
Methods of forming nonmonocrystalline silicon-on-insulator thin-film transistors
Loop pile fabric
Surface pattern for sheet goods
Finger loop shear
Electro-hydraulic control system for a dual clutch transmission
Cover of an openable motor vehicle roof and motor vehicle roof equipment therewith