Bimorph flexural acoustic amplifier
First Claim
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1. A FLEXURAL-MODE SOLID-STATE ACOUSTIC SIGNAL TRANSLATING DEVICE COMPRISING:
- AN ACOUSTIC WAVE PROPAGATING ELEMENT OF PIEZOELECTRIC SEMICONDUCTIVE MATERIAL AND A LENGTH IN THE DIRECTION OF ACOUSTIC WAVE PROPAGATION WHICH IS LARGE RELATIVE TO THE WAVELENGTH IN SAID MATERIAL OF THE TRANSLATED ACOUSTIC WAVES AND COMPOSED OF A PAIR OF JUXTAPOSED PIEZOELECTRIC SEMICONDUCTIVE SEGMENTS IN TRANSVERSE JUXTAPOSITION RELATIVE TO SAID DIRECTION OF WAVE PROPAGATION;
MEANS COUPLED TO SAID ELEMENT AND RESPONSIVE TO AN INPUT SIGNAL FOR IMPRESSING ACOUSTIC WAVES ON SAID SEGMENTS TO INDUCE FLEXURAL MODE VIBRATION OF SAID ELEMENT WITH RESULTANT DEVELOPMENT OF BUNCHES OF ELECTRIC CHARGE IN LIKE PHASE IN TRANSVERSELY ALIGNED REGIONS OF SAID SEGMENTS;
MEANS COUPLED TO SAID ELEMENT AND RESPONSIVE TO SAID FLEXURAL MODE VIBRATION FOR DEVELOPING AN OUTPUT SIGNAL CORRESPONDING TO SAID INPUT SIGNAL;
AND MEANS FOR IMPRESSING A STEADY STATE BIAS VOLTAGE ACROSS SAID ELEMENT IN SAID DIRECTION OF WAVE PROPAGATION TO ESTABLISH A FLOW OF ELECTRIC CHARGE CARRIERS IN SAID MATERIAL, IN SAID DIRECTION OF WAVE PROPAGATION, TO INTERACT WITH SAID BUNCHES OF ELECTRIC CHARGE AND MODIFY THE AMPLITUDE OF SAID FLEXURAL MODE VIBRATION.
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1 Claim
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1. A FLEXURAL-MODE SOLID-STATE ACOUSTIC SIGNAL TRANSLATING DEVICE COMPRISING:
- AN ACOUSTIC WAVE PROPAGATING ELEMENT OF PIEZOELECTRIC SEMICONDUCTIVE MATERIAL AND A LENGTH IN THE DIRECTION OF ACOUSTIC WAVE PROPAGATION WHICH IS LARGE RELATIVE TO THE WAVELENGTH IN SAID MATERIAL OF THE TRANSLATED ACOUSTIC WAVES AND COMPOSED OF A PAIR OF JUXTAPOSED PIEZOELECTRIC SEMICONDUCTIVE SEGMENTS IN TRANSVERSE JUXTAPOSITION RELATIVE TO SAID DIRECTION OF WAVE PROPAGATION;
MEANS COUPLED TO SAID ELEMENT AND RESPONSIVE TO AN INPUT SIGNAL FOR IMPRESSING ACOUSTIC WAVES ON SAID SEGMENTS TO INDUCE FLEXURAL MODE VIBRATION OF SAID ELEMENT WITH RESULTANT DEVELOPMENT OF BUNCHES OF ELECTRIC CHARGE IN LIKE PHASE IN TRANSVERSELY ALIGNED REGIONS OF SAID SEGMENTS;
MEANS COUPLED TO SAID ELEMENT AND RESPONSIVE TO SAID FLEXURAL MODE VIBRATION FOR DEVELOPING AN OUTPUT SIGNAL CORRESPONDING TO SAID INPUT SIGNAL;
AND MEANS FOR IMPRESSING A STEADY STATE BIAS VOLTAGE ACROSS SAID ELEMENT IN SAID DIRECTION OF WAVE PROPAGATION TO ESTABLISH A FLOW OF ELECTRIC CHARGE CARRIERS IN SAID MATERIAL, IN SAID DIRECTION OF WAVE PROPAGATION, TO INTERACT WITH SAID BUNCHES OF ELECTRIC CHARGE AND MODIFY THE AMPLITUDE OF SAID FLEXURAL MODE VIBRATION.
- AN ACOUSTIC WAVE PROPAGATING ELEMENT OF PIEZOELECTRIC SEMICONDUCTIVE MATERIAL AND A LENGTH IN THE DIRECTION OF ACOUSTIC WAVE PROPAGATION WHICH IS LARGE RELATIVE TO THE WAVELENGTH IN SAID MATERIAL OF THE TRANSLATED ACOUSTIC WAVES AND COMPOSED OF A PAIR OF JUXTAPOSED PIEZOELECTRIC SEMICONDUCTIVE SEGMENTS IN TRANSVERSE JUXTAPOSITION RELATIVE TO SAID DIRECTION OF WAVE PROPAGATION;
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Current AssigneeAsher S. Blum
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Original AssigneeAsher S. Blum
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InventorsBlum, Asher S.
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Application NumberUS04/516,020Time in Patent Office537 DaysField of SearchUS Class Current330/5CPC Class CodesH03F 13/00 Amplifiers using amplifying...
