Filter circuit - with a first filter, - in which a serial signal path connects a first filter port (IN, FP1) to a second filter port (OUT, FP2), - in which circuit nodes are arranged in the serial signal path, which circuit nodes are each connected to a fixed potential via a parallel branch, - in which series resonators or interconnections of series resonators are arranged in the serial signal path, and parallel resonators or interconnections of parallel resonators are arranged in the parallel branches, - in which a first parallel branch, which is connected to a first circuit node arranged closest to the first filter port (IN, FP1), comprises a series interconnection of 4 to 8 of said parallel resonators, - in which a first series interconnection of a plurality of said series resonators is arranged in the serial signal path between the first filter port (IN, FP1) and the first circuit node, - in which a first capacitor is connected in series with the first parallel branch and a second capacitor is connected in series or in parallel with the first series interconnection of the plurality of said series resonators, - in which the parallel branches each have the same total capacitance, which results from the capacitance of the interconnection of parallel resonators and that of the capacitor connected in parallel or in series therewith, - in which the parallel branch arranged closest to the second filter port (OUT, FP2) can be excluded from this regulation of the total capacitances. - with a first filter, - in which a serial signal path connects a first filter port (IN, FP1) to a second filter port (OUT, FP2), - in which circuit nodes are arranged in the serial signal path, which circuit nodes are each connected to a fixed potential via a parallel branch, - in which series resonators or interconnections of series resonators are arranged in the serial signal path, and parallel resonators or interconnections of parallel resonators are arranged in the parallel branches, - in which a first parallel branch, which is connected to a first circuit node arranged closest to the first filter port (IN, FP1), comprises a series interconnection of 4 to 8 of said parallel resonators, - in which a first series interconnection of a plurality of said series resonators is arranged in the serial signal path between the first filter port (IN, FP1) and the first circuit node, - in which a first capacitor is connected in series with the first parallel branch and a second capacitor is connected in series or in parallel with the first series interconnection of the plurality of said series resonators, - in which a serial signal path connects a first filter port (IN, FP1) to a second filter port (OUT, FP2), - in which circuit nodes are arranged in the serial signal path, which circuit nodes are each connected to a fixed potential via a parallel branch, - in which series resonators or interconnections of series resonators are arranged in the serial signal path, and parallel resonators or interconnections of parallel resonators are arranged in the parallel branches, - in which a first parallel branch, which is connected to a first circuit node arranged closest to the first filter port (IN, FP1), comprises a series interconnection of 4 to 8 of said parallel resonators, - in which a first series interconnection of a plurality of said series resonators is arranged in the serial signal path between the first filter port (IN, FP1) and the first circuit node, - in which a first capacitor is connected in series with the first parallel branch and a second capacitor is connected in series or in parallel with the first series interconnection of the plurality of said series resonators, - in which the parallel branches each have the same total capacitance, which results from the capacitance of the interconnection of parallel resonators and that of the capacitor connected in parallel or in series therewith, - in which the parallel branch arranged closest to the second filter port (OUT, FP2) can be excluded from this regulation of the total capacitances.