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
Modulation of TIM receptor activity in combination with cytoreductive therapy
Asynchronous line interface rate adaptation to the physical layer with synchronous lines at the connection layer
Information repository search system
Social network user data advertising
Mixed reactant flow-by fuel cell
Fuel cell system, and electric vehicle equipped with the fuel cell system
Email certificates
  Randomly Featured Patents
Impatient plant named `Fify Orantwo`
Electronic device
Coleus plant named `Balaublach`
Patent foramen ovale (PFO) closure method and device
Carbon fiber reinforced plastic spoke plate
Systems and methods for providing a generic audit trail service
Magnetic window seal assembly
Lie level
Charge pump with reduced energy consumption through charge sharing and clock boosting suitable for high voltage word line in flash memories
Element inducible in response to injury, a promoter inducible in response to injury and a transgenic plant