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:
May. 17, 2005
Filed:
Apr. 10, 2001
Markus Schetelig, Essen, DE;
Paul Burgess, Bochum, DE;
Arno Kefenbaum, Hattingen, DE;
Nokia Mobile Phones Ltd., Espoo, FI;
Abstract
The invention relates to a receiver arrangement for receiving frequency-modulated radio signals, having a demodulator circuit arrangement (), which converts and intermediate-frequency signal into a voltage signal, which is applied to an input stage () of a signal-processing circuit arrangement (), and having a clock-signal oscillator (), which supplies a clock signal for generating a frequency signal for reducing the frequency of a received signal to the intermediate frequency, and relates to a method of adapting a receiving branch of the receiver arrangement to an input stage () of a signal-processing circuit arrangement () and a self-testing method. To allow the adaptation of the demodulator circuit arrangement to the downstream input stage of a signal-processing circuit arrangement to be carried out without external test signals, a test-signal generator stage () is provided, which forms a test signal with a known frequency from the clock signal supplied by the clock-signal oscillator ().