Patent ID: 6963156

Claim:
A surface acoustic wave device comprising: a piezoelectric substrate; a pair of surface acoustic wave reflectors disposed on said piezoelectric substrate along the propagation direction of surface acoustic waves; and a plurality of comb-shaped electrode sections arranged between the two surface acoustic wave reflectors; wherein a first comb-shaped electrode section, which is one of said plurality of comb-shaped electrode sections, has two opposing electrode fingers thereof connected to corresponding balanced terminals; divided portions of the first comb-shaped electrode section, which are divided in a direction that is substantially perpendicular to the propagation direction of surface acoustic waves, are connected to each other, and the connection point of the divided portions is grounded; and an electrode finger of the first comb-shaped electrode section extends outside of a propagation path of the surface acoustic waves to electrically connect said connection point of said divided portions of the first comb-shaped electrode section to ground.