Resources Contact Us Home
Variable output power supply

Image Number 4 for United States Patent #6788151.

A variable output power supply for use in a highly efficient linear amplification system includes an envelope detector having at least one input for receiving an input signal to be amplified. The envelope detector generates, as an output, a control signal that is representative of an envelope of the input signal. The variable output power supply further includes a controllable source that is coupled to the envelope detector. The controllable source generates an output voltage and/or current that is responsive to the control signal, such that the output of the variable output power supply dynamically changes as a function of the envelope of the input signal. When employed in a linear amplification system, the variable output power supply provides a supply voltage to a linear amplifier which can be dynamically varied in response to the envelope of the input signal so as to provide a substantially constant voltage supply headroom for the amplifier. In this manner, an efficiency and frequency response of the amplification system is improved, and a reduction in overall power dissipation of the amplification system can be achieved.

  Recently Added Patents
Heterocyclic compounds as CCR2B antagonists
Metal-containing compositions and method of making same
Package for a medicinal product
Memory device, test operation method thereof, and system including the same
Adjustable high precision surveying device
Lubricant composition and antioxident composition
Method of sending CTI messages in a communication system
  Randomly Featured Patents
Casing for the grinding position in a centerless grinding machine
Lead free frangible bullets
Modular building construction system
Seat belt retractor
Electrostatic discharge protection device comprising a plurality of highly doped areas within a well
Expanded pad structure
System for improved high-frequency arc starting of a welding process
Methods of sampling body fluid
Forced termination condition monitoring device, forced termination condition monitoring method and storage medium embodying forced termination condition monitoring program
Apparatus for precise determination of operating characteristics of optical devices contained in a monitoring probe