Invention Grant
- Patent Title: FM receiver
- Patent Title (中): FM接收机
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Application No.: US12527895Application Date: 2008-02-20
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Publication No.: US08838054B2Publication Date: 2014-09-16
- Inventor: Wolfdietrich Georg Kasperkovitz
- Applicant: Wolfdietrich Georg Kasperkovitz
- Applicant Address: NL Breda
- Assignee: Semiconductor Ideas to the Market
- Current Assignee: Semiconductor Ideas to the Market
- Current Assignee Address: NL Breda
- Agent Robert M. McDermott, Esq.
- Priority: EP07003673 20070222
- International Application: PCT/EP2008/001297 WO 20080220
- International Announcement: WO2008/101674 WO 20080828
- Main IPC: H04B1/16
- IPC: H04B1/16

Abstract:
FM receiver including an RF input circuit followed by a tunable mixer stage for frequency conversion of an RF FM signal into an IF FM signal, which is coupled to an FM input of a first narrow-band IF filter. The center frequency of the first narrow-band IF filter is controlled to vary in dependence on the IF FM signal. The first narrow-band IF filter is subsequently coupled to a first FM demodulator and a first LF signal processing unit. To increase the receiver's selectivity and sensitivity without adversely affecting tracking stability, the FM input of a first narrow-band IF filter is coupled through a second FM demodulator to a control input of said first narrow-band FM tracking filter for a feed forward tracking control of the center frequency of said first narrow-band FM tracking filter with the momentary frequency of the IF FM signal.
Public/Granted literature
- US20100093297A1 FM RECEIVER Public/Granted day:2010-04-15
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