Patent · US Active

Compensating circuit for a mixer stage

US7809348B2 · kind B2 · utility

0Cited by

3References

9Claims

0Family size

Assignee

Atmel Automotive GmbH · DE

Inventors

Michael Amann · Murr, DE
Thorsten Fahlbusch · Frankfurt am Main, DE
Leo Friesen · Neckarsulm, DE
Andreas Leistner · Grasbrunn, DE
Juergen Schnabel · Leingarten, DE

Key dates

Filing date	Aug 17, 2007
Grant date	Oct 5, 2010
Priority date	—
Expiry date	Feb 16, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH03D7/14
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A compensating circuit for a mixer stage is provided, wherein the mixer stage has an input stage to which an input signal for mixing can be applied and has, following the input stage, a switching stage for mixing a differential input signal—obtained from the input stage as a function of the input signal—with an oscillator signal, wherein the input of the compensating circuit can be connected to an input signal terminal of the input stage and the output of the compensating circuit can be connected to an input signal terminal of the switching circuit at which the differential input signal obtained by means of the input stage is present, and wherein a compensating signal obtained by means of a compensating stage of the compensating circuit, in particular for compensating intermodulation products, can be produced by the compensating circuit at its output. The compensating circuit has a compensating input stage with means for influencing an amplitude and/or phase of the input signal, by which means the compensating stage can be supplied with a modified input signal.

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