SUPER-SPEED HIGH EFFECTIVE AMPLIFIER

WIPO Patent Application WO/2004/082132

A1

The invent relates to a improved amplifier, especially relates to improve the features of a high speed linear , pluse amplifier and a loop-feedback A Class amplifier. How to improve the frequency of in-band effective gains fβ and the gains' product and reduce greatly feedback phase shift and transient distorsion, transient intermodulation distortion is a difficult problem in the field, in particular make it produce and fabricate industrially. The amplifier'backing stage uses low voltage or superlow constantvoltage to supply power, the heavy current gain stage uses low voltage or superlow constantvoltage to supply power, and the two stages output arbitrary heavy current and arbitrary high-tension swing output. The dynamic voltage is provided by current supply device dynamically, The current supply device can be any type, such as simulative, pulse, controlled, and digital . The total efficiency can be up to 90%-98% or more. At the saine time , the invention uses 1-n stages main circuit as loop feedback. In this way, the constitutional amplifier is between analog amplifier and digital amplifier, and has both advantages, without both disadvantages, and can completely fabricate integrally and modularly, reduces the cost greatly, and improve the features overall.

YU ZHIWEI (CN)

PCT/CN2004/000193

September 23, 2004

March 11, 2004

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YU ZHIWEI (CN)

H03F3/30; (IPC1-7): H03F3/00

US4553105A	1985-11-12
GB2279788A	1995-01-11
US5559468A	1996-09-24

SHANGHAI PATENT & TRADEMARK LAW OFFICE (Shanghai 3, CN)

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