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 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
Austenitic stainless steel welding wire and welding structure
Philanthropy management apparatus, system, and methods of use and doing business
Apparatus and method for exerting force on a subject tissue
Method for transforming a single reactor line
Support tray for server
Flash multi-level threshold distribution scheme
Event handling in an integrated execution environment
  Randomly Featured Patents
Adjustable armchair
Angled RJ to RJ patch panel
Enhanced system for yaw stability control system to include roll stability control function
Modulators of .alpha.7 nicotinic acetylcholine receptors and therapeutic uses thereof
Massively parallel processor including queue-based message delivery system
Solar cell substrate
Pulse width modulation algorithm
Catalyst converter
Decreased load time by storing cassette initialization information
Optical data transfer device