Abstract
We report quartz level temperature stability of piezoelectrically driven silicon MEMS resonators. Frequency stability of better than ±10 ppm is measured for 23 MHz extensional mode resonators over a temperature range of T = -40... + 85°C. The temperature compensation mechanism is entirely passive, relying on the tailored elastic properties of heavily doped silicon with a doping level of n > 1020cm-3, and on an optimized resonator geometry. The result highlights the potential of silicon MEMS resonators to function as pin-to-pin compatible replacements for quartz crystals without any active temperature compensation.
Original language | English |
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Title of host publication | Frequency Control Symposium & the European Frequency and Time Forum (FCS) |
Subtitle of host publication | 2015 Joint Conference of the IEEE International |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Pages | 420-422 |
ISBN (Electronic) | 978-1-4799-8865-5, 978-1-4799-8866-2 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A4 Article in a conference publication |
Event | IEEE International Frequency Control Symposium and European Frequency and Time Forum - Denver, United States Duration: 12 Apr 2015 → 16 Apr 2015 |
Conference
Conference | IEEE International Frequency Control Symposium and European Frequency and Time Forum |
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Abbreviated title | IFCS/EFTF |
Country/Territory | United States |
City | Denver |
Period | 12/04/15 → 16/04/15 |
Keywords
- silicon
- resonant frequency
- Thermal stability
- Micromechanical devices
- temperature measurement
- frequency measurement
- temperature