[go: up one dir, main page]

Long et al., 1991 - Google Patents

Quartz crystal oscillators with direct resonator heating

Long et al., 1991

View PDF
Document ID
8605692306066775731
Author
Long B
Weaver G
Publication year
Publication venue
Proceedings of the 45th Annual Symposium on Frequency Control 1991

External Links

Snippet

The authors describe a novel low-power, ovenized oscillator with the crystal heated directly by means of a thin-film resistive heater deposited on its surface. The only significant path for heat loss is through the resonator mounting ribbons and posts, and these, being long and …
Continue reading at www.n4iqt.com (PDF) (other versions)

Classifications

    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/026—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using a memory for digitally storing correction values
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes
    • H03L1/025—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes and a memory for digitally storing correction values
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezo-electric resonator
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
    • H—ELECTRICITY
    • H03—BASIC ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification

Similar Documents

Publication Publication Date Title
US7310024B2 (en) High stability double oven crystal oscillator
US7545227B2 (en) Low-latency start-up for a monolithic clock generator and timing/frequency reference
US6362700B1 (en) Temperature controlled compensated oscillator
US7786812B2 (en) Oscillators having reactance-adjustable frequency control
US6784756B2 (en) On-board processor compensated oven controlled crystal oscillator
US20120043999A1 (en) Mems stabilized oscillator
US6621361B1 (en) Dual oven oscillator using a thermoelectric module
TW201044791A (en) Clock, frequency reference, and other reference signal generator with frequency stability over temperature variation
US20020005765A1 (en) Digital indirectly compensated crystal oscillators
CN105027447A (en) Single insertion trimming of highly accurate reference oscillators
US20180013384A1 (en) Temperature-compensated crystal oscillator based on analog circuit
US7482889B2 (en) Apparatus and method of temperature compensating an ovenized oscillator
You et al. Oven controlled N++ [1 0 0] length-extensional mode silicon resonator with frequency stability of 1 ppm over industrial temperature range
Long et al. Quartz crystal oscillators with direct resonator heating
Wu et al. A temperature-stable MEMS oscillator on an ovenized micro-platform using a PLL-based heater control system
JP5040864B2 (en) Electronics
US6707347B2 (en) Crystal oscillator that utilizes the power transistor of an output amplifier to heat the crystal resonator
Kobayashi et al. High-performance DSP-TCXO using twin-crystal oscillator
US20060081605A1 (en) Crystal oscillator and temperature-keeping method thereof
Chen et al. Enhancement of temperature stability via constant-structural-resistance control for MEMS resonators
JPS6016134B2 (en) Atomic frequency standard device
US11722096B2 (en) Oven controlled MEMS oscillator with multiple temperature control loops
JPH1141032A (en) Temperature controller for crystal oscillator
JPH02203605A (en) Temperature compensation crystal oscillator
JP2014230201A (en) Temperature control circuit, oven-controlled piezoelectric oscillator and temperature control method