Resources Contact Us Home
Method and device for biasing a transistor of a radio frequency amplifier stage

Image Number 4 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
Structural plasticity in spiking neural networks with symmetric dual of an electronic neuron
Compounds and their salts specific to the PPAR receptors and the EGF receptors and their use in the medical field
Method and apparatus for executing load distributed printing
Print control server, print controlling method, and print control program
Automated dynamic differential data processing
Phase noise extraction apparatus and technique
MOS resistor apparatus and methods
  Randomly Featured Patents
Amphibious paddle track propulsion system
Hot wire anemometer gas flow sensor having improved operation and compensation
Method of manufacturing semiconductor chips for display
Multiplexer w/ selective switching for external signals
Aromatic polyamide fiber-polyester fiber-blended spun yarn fabric
Methods and apparatus for optical component identification
Laser plate making method and press plate made thereby
Tracer training projectile
System for mosaicing digital ortho-images
Wheel or wheel cover