Oscillator with piezoelectric resonator

Details Oscillator with piezoelectric resonator Oscillator with piezoelectric resonator

1988-07-06

1990-03-06

Laroche, Eugene R.

Oscillators

Electromechanical resonator

Crystal

H03B 532

Patent

active

049069489

ABSTRACT:
An oscillator with a piezoelectric resonator is disclosed. Said oscillator comprises a resonator, for example, a quartz resonator, looped through a phase-shifting device and voltage-increasing means on a logic gate. Furthermore, the logic gate is biased by a resistor. The use of a logic gate gives excellent short-term stability at a very low cost. For example, the use of CMOS technology gives higher performance than that of oscillators using analog amplifiers, and does so at lower cost. The invention can be applied mainly to the making of oscillators that are highly stable, especially in the short term, and to the making of devices using oscillators of this type. Non-exhaustive examples of such devices include radars, transmitters, receivers, synchronizing devices, motor control devices, clocking devices and computers.

REFERENCES:
patent: 3699476 (1972-10-01), Mancini
patent: 3743868 (1973-07-01), Kawada
ELECTRONICS COMPONENT & APPLICATIONS, vol. 7, No. 2, 1985, pp. 73-76, Eindhoven, NL; J. Exalto, "Crystal Oscillators Using HCMOS ICs".
PATENT ABSTRACT OF JAPAN, vol. 9, No. 47, (W-299) (1770), Feb. 27, 1985; & JP-A-59 188 203 (Hitachi Seisakushio K.K.) 25-10 1984.

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