Title:
VARIABLE PIEZOELECTRIC OSCILLATOR WITH HIGH SPECTRUM PURITY AND TEMPERATURE COMPENSATION
Document Type and Number:
Japanese Patent JPS63309003
Kind Code:
A
Abstract:
A temperature-compensated piezoelectric oscillator of high-spectral purity, capable of being controlled in frequency, consists of a compensation circuit, a processing circuit, a phase-shifting circuit, containing the piezoelectric resonator, and an oscillating circuit. To obtain high spectral purity, it is proposed to use a low-pass filter, placed between the compensation circuit and one of the inputs of the processing circuits, to process the signal coming from the compensation circuit. This filter eliminates the influence of the temperature noise coming from the compensation circuit. The invention can be applied to controllable frequency, temperature compensated piezoelectric oscillators where high spectral purity is sought.
Inventors:
JIRU ROBISHIYON
DEIDEIE PARURI
DEIDEIE PARURI
Application Number:
JP12040288A
Publication Date:
December 16, 1988
Filing Date:
May 17, 1988
Export Citation:
Assignee:
CEPE
International Classes:
H03B5/32; H03L1/02; (IPC1-7): H03B5/32
Attorney, Agent or Firm:
Kazuo Sato (2 outside)
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