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
Messaging service using different text messaging channels
Vaporizer for sterilization of plastic containers
Method of re-ordering received data blocks in hybrid automatic repeat request telecommunication system
Method and device for pumping liquids using a pneumatic positive displacement pump
Model based control and estimation of mercury emissions
Crystallized diacetylenic indicator compounds and methods of preparing the compounds
Luminaire
  Randomly Featured Patents
Floor square
Automatic hand-held photographic light meters
Antibodies to granulocyte-macrophage colony-stimulating factor
Drainage channel
Aminoguanidine carboxylate lactams for the treatment of non-insulin-dependent diabetes mellitus
High responsivity high bandwidth metal-semiconductor-metal optoelectronic device
Method for compensating for clock signal difference between a switch and a peripheral device, and associated apparatus
Functionalized elastomers
Pluggable electronic card presence detect scheme for use in parallel and serial vital detect product data (VPD) collection systems
Laser annealing method and laser annealing device