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
Method of manufacturing acrylic film, and acrylic film
Vibration disturbance estimation and control
Method and apparatus for accessing coconut water
VEGF-specific capture agents, compositions, and methods of using and making
Zoom lens
Semiconductor device and manufacturing method thereof
Direct converting apparatus, method for controlling the same, and control signal generation device
  Randomly Featured Patents
Back relief support cushion
Cathodic protection system for reinforced concrete
Water-cooled cyclone separator
Hand grip for carrying articles
Methods and apparatus for enabling a component in a first transaction processing environment to access a resource in another environment that is under the control of an Xatmi complaint transac
Method of producing a cell surface bound lam-1 specific antibody
Temperature compensated circulator
Electronic device and method of manufacturing the same
Hybrid programmable logic device
Address generator for a semiconductor memory