| 摘要 |
An AM receiver with at least one IF filter with a fixed IF bandwidth comprises at least one downconversion stage ( 3, 4, 5 ) to shift the signal input thereto into an IF range (IF 1 ) having a variable oscillation frequency (f<SUB>LO1</SUB>) which is adjustable to detune a wanted center frequency (f<SUB>C1</SUB>) of a wanted signal part ( 30 ) from a center frequency (f<SUB>IF1</SUB>) of the at least one IF filter so that an unwanted signal part ( 31 b) adjacent to the wanted signal part ( 30 ) lies outside the fixed IF bandwidth.
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