Surface acoustic wave device with shorting bar in fast region

A method for fabricating a surface acoustic wave (SAW) device, comprising:

• providing a piezoelectric substrate;
• providing an interdigitated transducer over the piezoelectric substrate and comprising:
• a first electrode comprising a first bus bar, a first plurality of fingers extending orthogonally from the first bus bar, and a first shorting bar that is parallel with the first bus bar and extends across the first plurality of fingers;
• and
• a second electrode comprising a second bus bar, a second plurality of fingers extending orthogonally from the second bus bar, and a second shorting bar that is parallel with the second bus bar and extends across the second plurality of fingers, wherein the second plurality of fingers are interdigitated with the first plurality of fingers;
• and
• providing a first piston mode rail that is isolated from and extends over distal ends of the first plurality of fingers;
• and
• providing a second piston mode rail that is isolated from and extends over distal ends of the second plurality of fingers.

A mobile terminal comprising transmit circuitry and receive circuitry that comprises at least one surface acoustic wave (SAW) device comprising:

• piezoelectric substrate;
• an interdigitated transducer over the piezoelectric substrate and comprising:
• a first electrode comprising a first bus bar, a first plurality of fingers extending orthogonally from the first bus bar, and a first shorting bar that is parallel with the first bus bar and extends across the first plurality of fingers;
• and
• a second electrode comprising a second bus bar, a second plurality of fingers extending orthogonally from the second bus bar, and a second shorting bar that is parallel with the second bus bar and extends across the second plurality of fingers, wherein the second plurality of fingers are interdigitated with the first plurality of fingers;
• and
• a first piston mode rail that is isolated from and extends over distal ends of the first plurality of fingers;
• and
• a second piston mode rail that is isolated from and extends over distal ends of the second plurality of fingers.