Patent · US Expired

Receiver circuit, particularly for mobile radio

US7127221B2 · kind B2 · utility

1Cited by

14References

8Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Markus Hammes · Dinslaken, DE
Stefan Heinen · Krefeld, DE
Stefan Van Waasen · Kolbermoor, DE
Andre Hanke · Mülheim an der Ruhr, DE
Elmar Wagner · Taufkirchen, DE

Key dates

Filing date	Mar 10, 2003
Grant date	Oct 24, 2006
Priority date	—
Expiry date	Nov 27, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH03D1/2245
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In a receiver circuit for demodulating a high-frequency signal, a limiting amplifier stage with a downstream sigma-delta converter is connected in series with a mixer stage that transforms a high-frequency signal that is supplied at its input into an intermediate-frequency signal. The intermediate-frequency signal at the output of the limiting amplifier stage is value-discrete and time-continuous. The described receiver architecture has a high sensitivity, is substantially independent of production tolerances, and occupies a small area; therefore, it is particularly suitable for mobile radio applications.

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