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DC-offset cancelled programmable gain array for low-voltage wireless LAN system and method using the same
Pui In Mak; Seng Pan U; Rui P Martins
Rights HolderUniversity of Macau
Date Available2011-05-24
CountryUnited States
Subtype发明专利
Contribution Rank1
Abstract

An amplifier circuit includes a transconductance amplifier at an input side of the amplifier circuit, a transimpedance amplifier connected to an output of the transconductance amplifier, and a voltage amplifier connected to an output of the transimpedance amplifier. The transconductance amplifier and the transimpedance amplifier form a low-impedance node at an interface thereof. A feedback circuit is connected between an output of the voltage amplifier and the low-impedance node between the transconductance amplifier and the transimpedance amplifier. The transconductance amplifier, the transimpedance amplifier, and the voltage amplifier form a main amplifier stage. The feedback circuit senses an imbalance in an output of the main amplifier stage, whereby a correction signal is integrated and negatively fed back to the low-impedance node between the transconductance amplifier and the transimpedance amplifier.

Application Date2009-01-16
Patent NumberUS7948309B2
Language英语
Application NumberUS12355658
Open (Notice) NumberUS7948309B2
Fulltext Access
Document TypePatent
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
INSTITUTE OF MICROELECTRONICS
AffiliationUniversity of Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Pui In Mak,Seng Pan U,Rui P Martins. DC-offset cancelled programmable gain array for low-voltage wireless LAN system and method using the same. US7948309B2.
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