| 摘要 |
Receptor circuit, in particular with medium-frequency compensation, as a function of the modulation, of an IF filter (2, 6, 10, 11) with a relatively narrow band compared with the channel-band width. Said IF filter (2, 6, 10, 11) and/or the LF part (21-26) following a demodulator (14) have a varying signal transmission characteristic. A circuit is provided for modifying the signal transmission characteristic in the IF or LF part, comprising the following consecutive stages, to which additional intermediate stages can be added: a signal reception part (28) for deviating various signals comprising portions which are characteristic of the quality of reception and for relaying said signals as output signals; a signal regenerating part (600) for modifying the output signals of the signal reception part (28) in function of time, amplitude and/or frequency in order to generate signals which are characteristic of given reception or interference conditions; a signal combination part for generating output signals by logically or chronologically combining the signals emitted by the signal regeneration part (600); and a signal emitting part (200, 400) for sending control signals to individual stages of the IF or LF part following the output signals from the signal combination part.
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