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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Hansen; Jens
Address:
Berlin, DE
No. of patents:
10
Patents:












Patent Number Title Of Patent Date Issued
5369470 FM receiver which detects and responds to receiving and interference states November 29, 1994
An FM receiver includes an IF unit followed by an LF unit, the IF unit having an IF filter arrangement. The center frequency of the IF filter arrangement, which is relatively narrow-banded with respect to the channel bandwidth, is controlled in dependence on the receiving conditions. The
5339463 FM receiver with muting circuit August 16, 1994
FM receiver including means for controlling the center frequency of an IF filter, which is relatively narrow-banded with respect to the channel bandwidth, in dependence on the desired modulation, the receiver including a signal processing unit comprising an IF unit and an LF unit for
5287558 FM receiver February 15, 1994
An FM receiver includes an IF unit followed by an LF unit, the IF unit having an IF filter arrangement. The center frequency of the IF filter arrangement, which is relatively narrowbanded with respect to the channel bandwidth, is controlled as a function of the receiving conditions. The
5287557 FM receiver February 15, 1994
An FM receiver includes an IF unit followed by an LF unit, the IF unit having an IF filter arrangement. The center frequency of the IF filter arrangement, which is relatively narrowbanded with respect to the channel bandwidth, is controlled as a function of receiving conditions. The
5251332 FM receiver which detects and responds to receiving and interference states October 5, 1993
An FM receiver includes an IF unit followed by an LF unit, the IF unit having an IF filter arrangement. The center frequency of the IF filter arrangement, which is relatively narrowbanded with respect to the channel bandwidth, is controlled as a function of the receiving conditions. The
5241697 FM receiver August 31, 1993
An FM receiver includes an IF unit followed by an LF unit. The receiver has circuitry for changing the signal transmission characteristic of the IF and/or LF units, including a detector module with detector circuits for detecting values characteristic of receiving or interference states,
5159709 Arrangement having tracking IF filter October 27, 1992
In an FM receiver where the center frequency of an IF filter is varied depending on the received signal, an arrangement is described in which the passband of the retuned IF filter is selected so that a distinct resonance region having a relatively steep-edged drop of at least 6 dB exists
5155862 FM receiver having variable IF filter October 13, 1992
In an FM receiver where the center frequency of an IF filter is varied depending on the received signal, an arrangement is described where the bandwidth of the variable IF filter is changed depending on reception quality of the received signal.
4903332 Filter and demodulation circuit for filtering an intermediate frequency modulated signal carryin February 20, 1990
Intermediate frequency signals are produced by mixing with an oscillator voltage and subsequently filtered and demodulated. The oscillator voltage or the resonance frequency of the filter or filters are followed up by a control voltage derived from the demodulated signal corresponding to
4885801 Method and circuit for converting frequency-modulated signals through at least one intermediate December 5, 1989
A mixer mixes received frequency modulated signals with a frequency provided by a voltage controlled oscillator to generate intermediate frequency signals. The intermediate frequency signals are filtered by a filter and input to a demodulator to generate low frequency signals. A cont










 
 
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