Voltage controlled piezoelectric switching device

Claim 1

A VOLTAGE CONTROLLED PIEZOELECTRIC DEVICE COMPRISING (A) AN ELONGATED STRIP OF PIEZOELECTRIC MATERIAL, (B) FIRST AND SECOND PAIRS OF INPUT ELECTRODES ATTACHED TO SAID PIEZOELECTRIC STRIP, THE ELECTRODES OF SAID FIRST PAIR BEING ATTACHED TO OPPOSITE SURFACES OF SAID PIEZOELECTRIC STRIP ADJACENT ONE END THEREOF AND THE ELECTRODES OF SAID SECOND PAIR BEING ATTACHED TO OPPOSITE SURFACES OF SAID PIEZOELECTRIC STRIP ADJACENT THE OTHER END THEREOF, (C) A PLURALITY OF N PAIRS OF OUTPUT ELECTRODES, WHERE N IS ANY INTEGER, ATTACHED TO SAID PIEZOELECTRIC STRIP BETWEEN SAID FIRST AND SECOND PAIRS OF INPUT ELECTRODES, THE EVEN-NUMBERED ELECTRODES BEING SECURED TO ONE SURFACE OF SAID STRIP AT SPACED APART LOCATIONS AND THE ODD-NUMBERED ELECTRODES BEING SECURED TO THE OTHER SURFACE OF SAID STRIP OPPOSITE SAID EVENNUMBERED ELECTRODES AT CORRESPONDING SPACED APART LOCATIONS, (D) FIRST AND SECOND TERMINATIONS AFFIXED TO OPPOSITE ENDS OF SAID STRIP, SAID TERMINATIONS ABSORBING SUBSTANTIALLY WITHOUT REFLECTION ANY INCIDENT ACOUSTICAL ENERGY SUPPLIED THERETO FROM SAID STRIP, (E) FIRST AND SECOND SAWTOOTH VOLTAGE GENERATORS COUPLED BETWEEN SAID FIRST AND SECOND PAIRS OF INPUT ELECTRODES RESPECTIVELY, THE SAWTOOTH VOLTAGES PRODUCED BY SAID VOLTAGE GENERATORS PROPAGATING ELASTIC WAVES ACCOMPANIED BY ELECTRIC FIELDS ALONG SAID STRIP, (F) FIRST AND SECOND MULTIVIBRATORS, SAID FIRST MULTIVIBRATOR BEING RESPONSIVE TO AN APPLIED CONTROL SIGNAL AND SAID SECOND MULTIVIBRATOR BEING RESPONSIVE TO SAID APPLIED CONTROL SIGNAL AND TO APPLIED TRIGGER PULSES, AND (G) FIRST AND SECOND DIFFERENTIATION NETWORKS COUPLED BETWEEN THE OUTPUTS OF SAID FIRST AND SECOND MULTIVIBRATORS AND THE INPUTS OF SAID FIRST AND SECOND SAWTOOTH VOLTAGE GENERATORS, SAID ELASTIC WAVES INTERSECTING AT A SELECTED ONE OF SAID PAIRS OF OUTPUT ELECTRODES IN ACCORDANCE WITH THE MAGNITUDE OF SAID APPLIED CONTROL SIGNAL, THE VOLTAGE ACROSS SAID SELECTED PAIR OF OUTPUT ELECTRODES BEING PROPORTIONAL TO THE SUM OF THE TIME DERIVATIVES OF SAID SAWTOOTH VOLTAGES.