@inproceedings{b16df545bc22489ab9c88cd809ca8328,
title = "A 300-500 MHz Tunable Oscillator Exploiting Ten Overtones in Single Lithium Niobate Resonator",
abstract = "This paper presents the first voltage-controlled MEMS oscillator (VCMO) based on a Lithium Niobate (LiNbO3) lateral overtone bulk acoustic resonator (LOBAR). The VCMO consists of a LOBAR in a closed loop with 2 amplification stages and a varactor-embedded tunable LC tank. By adjusting the bias voltage applied to the varactor, the tank can be tuned to change the closed-loop gain and phase responses of the oscillator so that the Barkhausen conditions are satisfied for a particular resonance mode. The tank is designed to allow the proposed VCMO to lock to any of the ten overtones ranging from 300 to 500 MHz. Owing to the high-quality factors of the LiNbO3 LOBAR, the measured VCMO shows a low close-in phase noise of -100 dBc/Hz at 1 kHz offset from a 300 MHz carrier and a noise floor of -153 dBc/Hz while consuming 9 mW. With further optimization, this VCMO can lead to direct radio frequency (RF) synthesis for ultra-lowpower transceivers in multi-mode Internet-of-Things (IoT) nodes.",
keywords = "MEMS, lithium niobate, oscillators, overtone",
author = "Ali Kourani and Ruochen Lu and Anming Gao and Songbin Gong",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, IFCS/EFTF 2019 ; Conference date: 14-04-2019 Through 18-04-2019",
year = "2019",
month = apr,
doi = "10.1109/FCS.2019.8856145",
language = "English (US)",
series = "IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "IFCS/EFTF 2019 - Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum, Proceedings",
address = "United States",
}