Patent ID: 8031034

Claim:
A surface acoustic wave coupled resonator filter comprising: a piezoelectric substrate suitable for propagation of surface acoustic waves; opposing filter tracks, each track having a plurality of acoustically cascaded transducers disposed upon the piezoelectric substrate along a longitudinal axis of the filter track, wherein the plurality of acoustically cascaded transducers includes a center transducer and external transducers on opposing sides thereof, and wherein the center transducer comprises a split transducer; each of the filter tracks having a plurality of signal pads associated with the transducers and at least one of the filter track signal pads is driven in at least one of a differential mode and a balanced mode, wherein the opposing filter tracks are electrically connected by at least two connecting lines connected between the opposing split transducers; and at least two crossover bridges, each crossover bridge crossing one of the at least two connecting lines, wherein voltages for the at least two crossover bridges are approximately the same, and wherein voltages for the at least two connecting lines are approximately the same in magnitude but are substantially out-of-phase.