Internal heated quartz resonator with low sensitivity to an accelerator

Abramson, I.V.

doi:10.1109/freq.1995.484093

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…It was shown in previous works, that utilization of power dissipated in the heating transistor considerably improves steady state power consumption and frequency stability of the OCXO [3][4][5]. Further progress in DHR parameters can be accomplished by incorporating all of the thermocontroller circuitry into resonator package.…”

Section: Cover Substratementioning

confidence: 93%

Miniature OCXO using DHR technology

Abramzon

Boroditsky²,

Cocuzzi³

Proceedings of International Frequency Control Symposium

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This work describes the use of the Directly Heated Resonator (DHR) technology in miniature OCXO. Two designs incorporating DHR technology have been developed. One is a Resonator Thermostat (RT) housed in a standard TO-8 package. It contains a directly heated SC-cut crystal and thennocontroller circuit. The other is an OCXO packaged and hermetically sealed in a standard 14 DIP. This design integrates an RT and the oscillator circuitry in one package.Two designs develGped for this project have demonstrated performance in terms of fiequency stability an order of magnitude better than currently available TCXOs, while being comparable in size, power consumption and warm-up time to the latter. This paper discusses design considerations and test results.

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Section: Cover Substratementioning

confidence: 93%

Miniature OCXO using DHR technology

Abramzon

Boroditsky²,

Cocuzzi³

Proceedings of International Frequency Control Symposium

View full text Add to dashboard Cite

show abstract

“…Recent trends in frequency standards have been to aggressively shrink the size of rubidium atomic clocks and attempt to develop batch manufacturing techniques to lower the production cost [2,3,4,5,6,7,8,9,10,11,12]. For crystal oscillators, every possible refinement has been applied in the last few decades to improve the long-term accuracy and temperature stability [13,14,15,16,17,18], and to reduce the power consumption of oven-controlled devices [19,20,21,22,23]. New solutions are needed to realize low-cost, portable frequency sources with improved accuracy.…”

Section: List Of Figuresmentioning

confidence: 99%

“…However, hysteresis in the quartz resonator frequency under temperature cycling limits the temperature stability of MCXO's to less than 2 x 10 -8 [13]. A different technique is direct heating of the quartz crystal for lowpower temperature regulation [20,21,22]. A serious shortcoming of this technique results from thermal stress across the crystal resonator, which shifts the resonant frequency.…”

Section: Power Consumptionmentioning

confidence: 99%