Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Amplifier feedback and bias configuration










Image Number 4 for United States Patent #7446612.

A wireless communication device output amplifier configured to reduce or eliminate out of band oscillations from voltage standing waves generated by antenna impedance mismatch reflection. The amplifier is configured with an input, output, and biasing node. The biasing node is configured to receive a biasing signal from a biasing amplifier. The biasing amplifier draws current from the biasing node while providing the biasing voltage to the output amplifier. To reduce or eliminate out of band voltage standing waves from antenna reflections, a frequency dependant network is provided as a feedback loop to selectively provide feedback to the output amplifier to reduce or eliminate unwanted out of band oscillations, such as voltage standing waves. The frequency dependant network may comprise one or more resistors, inductors, and capacitors which are of small size and may be integrated.








 
 
  Recently Added Patents
Article based on a composition containing a crosslinked blend of elastomers
Wireless communications apparatus and wireless communications method
Semiconductor device and method for manufacturing the same
Portable reading device with mode processing
Switching device, switch control method, and storage system
Video processing system and device with encoding and decoding modes and method for use therewith
End to end email monitor
  Randomly Featured Patents
Immunological compositions as cancer therapeutics
Circuit which supplies a clock pulse to a microcomputer
Shift register
Microorganisms, demulsifiers and processes for breaking an emulsion
Sewing or looping head, particularly for automated closing of tubular knitted articles at an axial end thereof
Device and method for applying adhesive tape
Electro-mechanical sign structure with alternating faces formed by several adjacent dihedral angles
Hanging garment container
Above-the-knee cast
Herbicidally active substituted phenylsulfonylurea derivatives