The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2006
Filed:
Mar. 10, 2003
Markus Hammes, Dinslaken, DE;
Stefan Heinen, Baesweiler, DE;
Stefan Van Waasen, Duisburg, DE;
Andre Hanke, Düsseldorf, DE;
Elmar Wagner, Duisburg, DE;
Markus Hammes, Dinslaken, DE;
Stefan Heinen, Baesweiler, DE;
Stefan Van Waasen, Duisburg, DE;
Andre Hanke, Düsseldorf, DE;
Elmar Wagner, Duisburg, DE;
Infineon Technologies AG, Munich, DE;
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.