Abstract: An apparatus for improving the stop band response of a surface acoustic wave device (200) comprising a surface acoustic wave device (200) having internal electromagnetic coupling (106) and external electromagnetic coupling (108) and acoustic coupling (104); and a cancellation network (250, 251) coupled to the surface acoustic wave device to reduce the internal electromagnetic coupling (106) and external electromagnetic feed through (108); wherein the cancellation network (250, 251) reduces the amount of electromagnetic feed through at the output (102) of the surface acoustic wave device (200).