Development of Inductive Quartz Crystal Oscillator Circuit with CMOS Inverter

Ehara, K.; Tanaka, Hirokazu; Sato, Tomio; Kanno, Yoshinori

doi:10.1109/icsmc.2006.384917

Cited by 3 publications

(3 citation statements)

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“…Acceleration of the start-up is studied by the gain control in the quartz crystal oscillator using a cascade circuit in the frequency region of several Mega Hertz [1]- [3]. In recent works, double-resonance quartz crystal oscillator was reported for the enhancement of the frequency pulling [4] and the mode separation of the multimode quartz crystal resonator [5]. Stability of the oscillation frequency is generally discussed based on the moving average of the variance determined for the discrete samples following the proto call [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Start-Up Acceleration of Quartz Crystal Oscillator Using Active Inductance Double Resonance and Embedded Triggering Circuit

Sato¹,

Kudo²,

Akitsu³

2015

JST

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Low-frequency double-resonance quartz crystal oscillator was developed with active inductance circuit aiming the start-up of stable oscillation of tuning fork-type quartz crystal resonator at 32.768 kHz within 0.37 ms. The initial oscillation is triggered by a part of crystal oscillator forming a CR oscillator. The negative resistance ranges to 4 MΩ at gmf of 4.1 μA/V. In a limited frequency range, the circuit shows negative reactance Ccci = −3.4 pF equivalent to inductance Lcc = 9.8 H. The Allan standard deviation indicated 10 −11 to 10 −10 , showing high stability comparable to general quartz crystal oscillator.

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Section: Introductionmentioning

confidence: 99%

Start-Up Acceleration of Quartz Crystal Oscillator Using Active Inductance Double Resonance and Embedded Triggering Circuit

Sato¹,

Kudo²,

Akitsu³

2015

JST

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“…Tuning fork type Q-MEMS quartz crystal sensor realizes the direct digital sensing of temperature, where Q-MEMS is a combination word of Quartz and MEMS (Micro Electro Mechanical System), a fabrication process offering high performance in a compact package, with CI values as low as those on ordinary-sized crystals. In recent works, double-resonance quartz crystal oscillator was reported for the enhancement of the frequency pulling [8], the mode separation of the multimode quartz crystal resonator [9] [10], and the start-up acceleration of low frequency quartz crystal oscillator circuit [11]. Start-up acceleration of several Mega Hertz is studied by the gain control in the quartz crystal oscillator using a cascade circuit [12]- [14].…”

Section: Introductionmentioning

confidence: 99%

Compatibility of the Active Inductance Double Resonance Quartz Oscillator with Q-MEMS Temperature Sensor

Akitsu¹,

Kudo²,

Sato³

2015

ENG

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“…The quartz crystal oscillator at a frequency lower than f 1 is experimentally realized using an active inductance circuit [5]. The oscillation frequency in the original work of Allan and Barnes, however, was determined as the LC resonance, and the quartz crystal resonance is not experimentally confirmed at frequencies lower than f 1 .…”

Section: Introductionmentioning

confidence: 99%

Short‐term stability in the intermediate region between quartz crystal oscillation and LC oscillation

Ruslan

Satoh

Akitsu

2012

IEEJ Transactions Elec Engng

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In a quartz crystal oscillator circuit, an LC resonance circuit was inserted that enabled major enlargement of the variable range of frequency compared with the conventional Colpitts or Pierce quartz crystal oscillator. The short-term stability of the oscillation was measured with Allan variance in the intermediate region between the quartz resonance and LC resonance, showing higher stability compared with the common LC oscillator. The analytical result is presented showing continuous transition from the quartz resonance to the LC resonance.

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Development of Inductive Quartz Crystal Oscillator Circuit with CMOS Inverter

Cited by 3 publications

References 1 publication

Start-Up Acceleration of Quartz Crystal Oscillator Using Active Inductance Double Resonance and Embedded Triggering Circuit

Start-Up Acceleration of Quartz Crystal Oscillator Using Active Inductance Double Resonance and Embedded Triggering Circuit

Compatibility of the Active Inductance Double Resonance Quartz Oscillator with Q-MEMS Temperature Sensor

Short‐term stability in the intermediate region between quartz crystal oscillation and LC oscillation

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