Patent · US Active

Signal downconverter

US7627303B2 · kind B2 · utility

2Cited by

2References

16Claims

0Family size

Assignee

Wipro Limited · IN

Inventors

Thomas Stoll · Lake in the Hills, US
Peter Widerin · Bregenz, AT

Key dates

Filing date	Aug 30, 2006
Grant date	Dec 1, 2009
Priority date	—
Expiry date	Dec 22, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH03D2200/0084
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A signal downconverter having a pair of passive double sideband mixers for receiving quadrature RF signals and mixing the same with local oscillator driving signals to provide mixed differential signals. The mixed differential signals are fed to a differential difference feedback amplifier high frequency ripples are eliminated and finally providing a down converted output signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.