The invention relates to a method and filter structure for filtering an input signal, which is applied to an input (1) of the filter structure, having a symbol rate. The input signal is guided to multiple parallel branches of the filter structure connected to the input (1), in which at least two sequence holding members (4) are each disposed. Symbol values of the input signal, which are applied to the outputs of the sequence holding members (4) at certain points are guided to multiple (N) parallel signal addition units (3) having weighted inputs. One output signal each is generated in the signal addition units (3) as the sum of the weighted symbol values that are applied to the inputs. According to the invention, space and energy saving filter structure is provided, wherein: the same amount of sequence holding members (4.1, 4.2, 4.3) is disposed in each of the parallel branches; as many signal addition units (3.1, 3.2, 3.3, 3.4) are disposed in the filter structure as the amount of parallel branches are provided in the filter structure; the sequence holding members (4.1, 4.2, 4.3) and addition units (3.1, 3.2, 3.3, 3.4) are nested inside each other; and the sequence holding members die (4.1, 4.2, 4.3) and the signal addition units (3) are controlled via a multi-phase clock signal (F1 to 4).