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
.beta.-2 microglobulin as a biomarker for peripheral artery disease
Control system for an internal combustion engine
Fuel cell module
Pre-primed roofing membrane
Wound dressings
System and method for providing an extended platform for an operating system
Engineered nucleic acids encoding a modified erythropoietin and their expression
  Randomly Featured Patents
Hair cutting machine
Vehicle front wheel pivot lock
Roaming encoded information reading terminal
Advertisement revenue management
Object-oriented apparatus and method for determining new object location relative to an existing object
Plasma processing method and apparatus
Recording medium and image formation process using the same
Scrubber for golf balls
Measuring head and measuring method
Novel substances and process for their production