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
Sealed, waterproof digital electronic camera system and method of fabricating same
(4934
Philanthropy management apparatus, system, and methods of use and doing business
Method of and apparatus for evaluating an optimal irradiation amount of an electron beam for drawing a pattern onto a sample
Methods and devices for rapid and specific detection of multiple proteins
Semiconductor device and method of manufacturing the same
Method and system for parallelizing data copy in a distributed file system
  Randomly Featured Patents
Method for detecting operating parameters of a power tool comprising an internal combustion engine
Feeder apparatus for web rotary press
Fuel-fired, power vented high efficiency water heater apparatus
Smectic liquid crystal compound and liquid crystal compositions
Partition system
System and method of providing control pulses to control operation of a converter with high frequency repetitive load transients
Caster for baggage
Encircle cork cage
Vapor phase oxidation of n-butane to maleic anhydride
Display apparatus for displaying content data, display method, and program