Working principle of MEMS Huygens clock (IMAGE)
Caption
(a) Schematic of original Huygens’s clock. (b) Structure of MEMS Huygens clock system. (c) Operating mode of MEMS resonator. (d) Image of microfabricated MEMS resonator. PLL: phase locked loop; TIA: trans-impedance amplifier; Va: DC driving voltage of the active oscillator; Vb: DC driving voltage of the passive oscillator; Ref: reference.
Credit
Xueyong Wei et al.
Usage Restrictions
Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted.
License
CC BY-NC-ND