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:
Feb. 26, 2008
Filed:
Mar. 10, 2003
Markus Hammes, Dinslaken, DE;
Stefan Heinen, Baesweiler, DE;
Stefan Van Waasen, Duisburg, DE;
Andre Hanke, Düsseldorf, DE;
Sönke Mehrgardt, Deisenhofen, DE;
Elmar Wagner, Duisburg, DE;
Markus Hammes, Dinslaken, DE;
Stefan Heinen, Baesweiler, DE;
Stefan Van Waasen, Duisburg, DE;
Andre Hanke, Düsseldorf, DE;
Sönke Mehrgardt, Deisenhofen, DE;
Elmar Wagner, Duisburg, DE;
Infineon Technologies AG, Munich, DE;
Abstract
A radio receiver with a low intermediate frequency has a first mixer stage that can be fed with a modulated input signal and at whose output a complex intermediate frequency signal can be derived. Connected downstream of the first mixer stage is a limiting amplifier at whose output the intermediate frequency signal is present in a discrete-value and continuous-time fashion. A sampling device, for sampling the intermediate frequency signal, and a digital demodulator unit are connected to the output of this limiter. The demodulated input signal can be derived at the output of this digital demodulator unit. The present radio receiver requires a low chip area in conjunction with low power consumption, but offers a high sensitivity and accuracy based on the digitally implemented demodulation.