Crystal resonator with plural electrodes for use in a crystal oscillating device of a temperature compensation type
First Claim
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1. A crystal resonator with plural electrodes, comprising:
- a crystal piece for causing thickness shear vibration;
a first pair of electrodes provided in a center of said crystal piece and coupled to a variable impedance; and
second and third pairs of electrodes provided on both sides of said first pair of electrodes, said second and third pairs of electrodes being electrically connected together, and coupled to an oscillation circuit.
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Abstract
A crystal resonator with plural electrodes comprises a crystal piece, first, second and third pairs of electrodes. The crystal piece causes shear vibration. The first electrode pair is provided in the center of the crystal piece and coupled to a variable impedance. The second and third electrode pairs are provided on both sides of the first electrode pair. The second and third electrode pairs are electrically connected together and are coupled to an oscillation circuit.
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Citations
6 Claims
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1. A crystal resonator with plural electrodes, comprising:
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a crystal piece for causing thickness shear vibration; a first pair of electrodes provided in a center of said crystal piece and coupled to a variable impedance; and second and third pairs of electrodes provided on both sides of said first pair of electrodes, said second and third pairs of electrodes being electrically connected together, and coupled to an oscillation circuit. - View Dependent Claims (2, 3)
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4. A crystal resonator with plural electrodes, comprising:
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a crystal piece for causing thickness shear vibration; a first pair of electrodes provided in a center of said crystal piece and coupled to an oscillation circuit; and second and third pairs of electrodes provided on both sides of said first pair of electrodes, said second and third pairs of electrodes being electrically connected together, and coupled to a variable impedance. - View Dependent Claims (5, 6)
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Specification