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Class Information
Number: 330/200
Name: Amplifiers > With power or bias voltage supply > For plural stage amplifier
Description: Subject matter where the power supply or bias means is for an amplifier comprising two or more stages of amplification.










Sub-classes under this class:

Class Number Class Name Patents
330/201 Filamentary cathodes heated by anode current or anode supply source 0


Patents under this class:

Patent Number Title Of Patent Date Issued
8559898 Embedded RF PA temperature compensating bias transistor Oct. 15, 2013
8254496 Power amplifier and radio wave transmitter having the same Aug. 28, 2012
8139792 Amplifier circuits, methods of starting and stopping amplifier circuits Mar. 20, 2012
7974597 Power amplifier system and mobile phone terminal using same Jul. 5, 2011
7810057 Characterizing linearity of amplifiers Oct. 5, 2010
RE41792 Controllable integrator Oct. 5, 2010
7317354 Inductor Jan. 8, 2008
7302246 Programmable gain amplifier with self-adjusting offset correction Nov. 27, 2007
7268618 Power amplifiers Sep. 11, 2007
7109791 Tailored collector voltage to minimize variation in AM to PM distortion in a power amplifier Sep. 19, 2006
6256482 Power- conserving drive-modulation method for envelope-elimination-and-restoration (EER) transmitters Jul. 3, 2001
5111158 Modulated voltage supply and fault monitoring thereof adapted for use in an RF power amplifier system May. 5, 1992
5093667 T/R module with error correction Mar. 3, 1992
4973919 Amplifying with directly coupled, cascaded amplifiers Nov. 27, 1990
4517528 Amplifier circuit driven by ground isolated power supply May. 14, 1985
4501979 Current amplifier having multiple selectable outputs Feb. 26, 1985
4079333 Audio amplifier Mar. 14, 1978











 
 
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