Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1992-02-20
1993-09-07
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310313D, 364821, H01L 4108
Patent
active
052432505
ABSTRACT:
In an SAW convolver device constructed by sealing an SAW convolver element having a piezoelectric film/insulator/semiconductor structure by means of a cover of a package, according to the present invention, an insulating base plate is disposed on a part of a metallic base plate of the package, on which insulating base plate there is disposed a resistor or a coil, and the gate electrode of the convolver is grounded in a DC-like manner through the resistor or coil.
Owing to the construction described above, it is possible to prevent that a voltage due to electrostatic charge, an accidental voltage due to erroneous handling, etc. are applied to the gate electrode of a zero bias type SAW convolver. As the result, it is possible to stabilize characteristics of the zero bias type SAW convolver for a long period of time and to improve the reliability thereof.
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Budd Mark O.
Clarion Co. Ltd.
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