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
Manufacturing aircraft parts
Organic metal complex and its use in organic electroluminescent device
Switchable memory diodes based on ferroelectric/conjugated polymer heterostructures and/or their composites
Radiation imaging device
Portable communication terminal, communication method and control program
Techniques to manage communications resources for a multimedia conference event
Registration and network access control
  Randomly Featured Patents
Hydraulic backhoe shift mechanism
Electro-optic signal measurement
Suction pipe of a vacuum cleaner
Sprocket cutter and method of assembling
Leaching chamber with drain holes in base flange
Drawer
Adaptive delay of timing control signals
Liquid absorbent solutions for separating nitrogen from natural gas
Recombinant HTLV-III proteins and uses thereof
Alternator diagnostic system