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- W2899015864 abstract "This paper presents a comprehensive guide to co-design piezoelectric RF-micro-electromechanical system (MEMS) resonators and CMOS for enabling voltage-controlled MEMS oscillators (VCMOs) that harness the best benefits out of both platforms. The analysis, focusing on understanding different tradeoffs among the tuning range, power consumption, gain, and phase noise, is generic to any kind of piezoelectric resonators and specific for Colpitts VCMOs. As a result of this paper, the first VCMO based on the heterogeneous integration of a high-Q lithium niobate (LiNbO3) micromechanical resonator and CMOS has been demonstrated. A LiNbO3 resonator array with a series resonance at 171.1 MHz, a Q of 410, and an electromechanically coupling factor of 12.7% is adopted, while the TSMC 65-nm RF LP CMOS technology is used to implement the feedback and tuning circuitry with an active area of $220times 70,,mu text{m}^{2}$ . The frequency tuning of the VCMO is achieved by programming a binary weighted digital capacitor bank and a varactor that are both connected in series to the resonator. The best measured phase noise performance of the VCMO is −72 and −153 dBc/Hz at 1 kHz and 10-MHz offsets from 178.23- and 175.83-MHz carriers, respectively. The VCMO consumes a dc current of $60~mu text{A}$ from a 1.2-V supply while realizing a tuning range of 2.4 MHz (~1.4% fractional tuning range). Such VCMOs can be applied to enable ultralow power, low phase noise, and wideband RF signal synthesis for emerging applications in Internet of Things." @default.
- W2899015864 created "2018-11-09" @default.
- W2899015864 creator A5016497308 @default.
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- W2899015864 date "2018-12-01" @default.
- W2899015864 modified "2023-10-16" @default.
- W2899015864 title "A Tunable Low-Power Oscillator Based on High-<inline-formula> <tex-math notation=LaTeX>$Q$ </tex-math> </inline-formula> Lithium Niobate MEMS Resonators and 65-nm CMOS" @default.
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- W2899015864 doi "https://doi.org/10.1109/tmtt.2018.2872959" @default.
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