If filter arrangement for FM reception signals
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United States of America Patent
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-
Dec 10, 1996
Grant Date -
N/A
app pub date -
Aug 17, 1995
filing date -
Jul 22, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns an I.F. filter arrangement in a receiver for receiving FM signals. An I.F. filter arrangement is to be provided which no longer contains the disadvantageous effects of a control loop from which a control value is extracted from the MPX signal to be used for tracking the I.F. filter. The solution according to the invention is an I.F. filter arrangement having a filter device which comprises a defined, in particular, a fixed adjusted bandpass region and at least two outputs having center frequencies staggered with respect to one another or I.F. frequencies staggered with respect to one another at the same center frequency. The signals from the outputs are fed to a weighting device which is regulated by a control value extracted from the demodulated FM signal.
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