Resources Contact Us Home
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
Electronic device utilizing graphene electrodes and organic/inorganic hybrid composites and method of manufacturing the electronic device
GaN-based Schottky barrier diode with field plate
Pneumatically or electromechanically actuatable disc brake
Apparatus for reference picture resampling generation and method thereof and video decoding system using the same
Spectral contrast for glaucoma imaging
Antimicrobial compositions, methods of preparation thereof, and uses thereof
Fluidity improver for aromatic polycarbonate resin, process for producing the fluidity improver for aromatic polycarbonate resin, aromatic polycarbonate resin composition, and molded product
  Randomly Featured Patents
Connector for framing system
Imidazolidines substituted with a heterocycle
High speed, high density electrical connector
Response time detection in a network having shared interfaces
Integrated circuit substrate bias selection circuit
Ultrasound diagnostic apparatus
Pet storage cabinet
Web dispenser
Slide rail having front release latch
Yarn winding machine