H - Electricity – 03 – H
Patent
H - Electricity
03
H
333/58
H03H 9/64 (2006.01) H03H 3/08 (2006.01) H03H 9/02 (2006.01) H03H 9/145 (2006.01)
Patent
CA 2040046
A surface-acoustic-wave device comprises a substrate of a piezoelectric material for providing a passage of surface acoustic waves at an upper major surface of the substrate, a plurality of interdigital electrodes provided on the piezoelectric substrate in a row in correspondence to the passage of surface acous- tic waves such that the electrodes are aligned in the propagating direction of the surface acoustic waves, each of the plurality of interdigital electrodes having a first part connected to a bonding pad on the sub- strate for external electric connection and having a plurality of finger electrodes extending parallel with each other in a direction crossing the propagating surface acoustic waves, and a second part separated from the first part and having a plurality of finger electrodes extending parallel with each other in a direction opposite to the direction of the finger electrodes of the first part. An interconnection pattern is provided on the surface of the substrate in correspondence to a region offset from the passage of the surface acoustic waves for connecting the second parts of adjacent interdigital electrodes with each other.
Miyashita Tsutomu
Satoh Yoshio
Fetherstonhaugh & Co.
Fujitsu Limited
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