Thin-Film Lithium Niobate Acoustic Delay Line Oscillators

Ming Huang Li, Ruochen Lu, Tomas Manzaneque, Songbin Gong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, thin-film lithium niobate (LiNbO3) acoustic delay line (ADL) based oscillators are experimentally investigated for the first time for the application of single-mode oscillators and frequency comb generation. The design space for the ADL-based oscillator is first analyzed, illustrating that the key to low phase noise lies in high center frequency (fo), large delay (τ G), and low insertion loss (IL) of the delay. Therefore, two self-sustained oscillators employing low noise amplifiers (LNA) and a low IL, long delay (fo=157MHz, IL =2.9dB, τG= 200-440ns) SH0 mode ADLs are designed for a case study. The two SH0 ADL oscillators show measured phase noise of -109 dBc/Hz and -127 dBc/Hz at 10-kHz offset while consuming 16 mA and 48 mA supply currents, respectively. Although the carrier power of the proposed oscillator is lower than published state-of-the-art ADL oscillators, competitive phase noise performance is still attained thanks to the low IL. Finally, frequency comb generation is also demonstrated with the same delay line and a commercial RF feedback amplifier, showing a comb spacing of 3.4 MHz that matches the open-loop characterization.

Original languageEnglish (US)
Title of host publication33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1285-1288
Number of pages4
ISBN (Electronic)9781728135809
DOIs
StatePublished - Jan 2020
Event33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020 - Vancouver, Canada
Duration: Jan 18 2020Jan 22 2020

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2020-January
ISSN (Print)1084-6999

Conference

Conference33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
CountryCanada
CityVancouver
Period1/18/201/22/20

Keywords

  • MEMS
  • acoustic delay lines
  • lithium niobate
  • oscillator
  • phase noise
  • piezoelectric transducers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Li, M. H., Lu, R., Manzaneque, T., & Gong, S. (2020). Thin-Film Lithium Niobate Acoustic Delay Line Oscillators. In 33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020 (pp. 1285-1288). [9056259] (Proceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS); Vol. 2020-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MEMS46641.2020.9056259