The filter includes at least one inter-digital converter (20) coupled to an electric load and/or source, in which reflecting electrode fingers (22) are provided for minimizing humps in the filter characteristic, caused by triple-transit signals. The positioning and/or the amount of reflecting electrode fingers are chosen based on the kind and the impedance value of the electric load and/or source. The inter-digital converter is pref. formed as a split-finger inter-digital converter.
