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
Catalysts for hydrodeoxygenation of polyols
Method, apparatus, and manufacture for adaptation of video encoder tuning parameters
Method and apparatus for content-aware resizing of data chunks for replication
Microcapsules, their use and processes for their manufacture
Metal-doped oxide, method of preparing the same, and solid oxide electrolyte using the metal-doped oxide
Compounds for nonsense suppression and methods for their use
Drive and startup for a switched capacitor divider
  Randomly Featured Patents
System and method for managing memory using multi-state buffer representations
Lens mount apparatus for a high definition video camera
Reticle manipulators and related methods for conveying thin, circular reticles as used in charged-particle-beam microlithography
Balloon catheter assembly
Coin sorting bank
Roll-wave sheet separator structure
Amorphous tin films for an integrated capacitor dielectric/bottom plate using high dielectric constant material
Spring actuated disc brake assembly with cam structure for force multiplication effect
Method for indicating characteristics of rotating apparatus or vibrating apparatus
Image display apparatus, image display method, and computer program