A surface acoustic wave (SAW) filter includes a transducer having an acoustic track to pass a SAW. A center frequency of the filter excites the SAW. The acoustic track includes cells along a longitudinal direction of the acoustic track. Each cell has electrode fingers. The cells include different cell types, where a cell type is defined by a connection sequence of electrode fingers of a cell. At least some of the cells are functional cells, each for exciting and/or reflecting the SAW. There are at least two functional cells, each of which includes at least one wide electrode finger and at least one narrow electrode finger. A reflective strength of a target functional cell is configurable by changing a width of an electrode finger in the target functional cell but by maintaining an overall width of the target functional cell substantially constant.