Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and device for biasing a transistor of a radio frequency amplifier stage










Image Number 3 for United States Patent #6778019.

A biasing device includes closed-loop transconductance slaving circuit, able to slave the time average of the base/emitter or gate/source voltage of the amplifier transistor (Q1) to a reference voltage corresponding to a desired quiescent current for the transistor. Moreover, viewed from the base or gate of the amplifier transistor (Q1), the impedance of the base/emitter or gate/source circuit is small at low frequency, and large with respect to the impedance of the radio frequency source within the radio frequency range of the signal. The device can be incorporated in a mobile terminal, such as a cellular mobile phone.








 
 
  Recently Added Patents
Integrated process for the manufacture of fluorinated olefins
Semiconductor device, method of manufacturing semiconductor device, and electronic apparatus
Antibodies to OX-2/CD200 and uses thereof
Controller interface providing improved data reliability
Porous objects having immobilized encapsulated biomolecules
Substituted phenylsulfur trifluoride and other like fluorinating agents
Camera system, video processing apparatus, and camera apparatus
  Randomly Featured Patents
Snatch proof handle for pocketbooks, handbags and the like
Nonvolatile semiconductor storage device and data erasing method
Extrusion equipment and especially die structure for making plastic siding
Syringe with pressure-limited delivery
Method and apparatus for producing a biomaterial product
Method and system for dynamically generating resistance, capacitance, and delay table look-ups
Photoconductive block copolymers
Printer
Process of reshaping decorated plastic materials
Fishing reel with centrifugal brake