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:
Jan. 08, 2008
Filed:
Jun. 07, 2002
Christian Grewing, Düsseldorf, DE;
Markus Hammes, Dinslaken, DE;
André Hanke, Düsseldorf, DE;
Stefan Van Waasen, Duisburg, DE;
Christian Grewing, Düsseldorf, DE;
Markus Hammes, Dinslaken, DE;
André Hanke, Düsseldorf, DE;
Stefan Van Waasen, Duisburg, DE;
Infineon Technologies AG, Munich, DE;
Abstract
The invention relates to a demodulator and also a demodulation method and enables a reliable demodulation even when the intermediate frequency range overlaps the range of the data frequencies of the signal. For this purpose, a rapidly oscillating output signal is generated from the in-phase signal and also the quadrature signal, the sign of which output signal varies in a manner dependent on the product of the signs of the in-phase signal and of the quadrature signal. Either an XOR gate or a multiplier stage may be used in order to generate an output signal of this type.