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:
Dec. 13, 2005
Filed:
Sep. 16, 1999
Bernd Bienek, Bocholt, DE;
Edgar Bolinth, Moenchengladbach, DE;
Yusuf Kalayci, Duisburg, DE;
Uwe Schwark, Bocholt, DE;
Bernd Bienek, Bocholt, DE;
Edgar Bolinth, Moenchengladbach, DE;
Yusuf Kalayci, Duisburg, DE;
Uwe Schwark, Bocholt, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
The invention relates to the filtering of a subfrequency band out of a receive frequency band, in which a carrier frequency for prefiltering the receive frequency band and an intermediate frequency for demodulating the frequency band filtered out during the prefiltering and for generating a frequency baseband are inserted into the signal propagation path, in which the desired subfrequency band is filtered out of the frequency baseband by a post-filtering and in which the carrier frequency, the intermediate frequency and the post-filtering are matched to one another.