Towards Digitally Addressable Delay Synthesis: GHZ Low-Loss Acoustic Delay Elements from 20 NS to 900 NS

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

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

Abstract

We present the first group of GHz S0 mode low-loss acoustic delay lines covering a wide range of delays from 20 ns to 900 ns for digitally addressable delay synthesis. The fabricated miniature acoustic delay lines show a fractional bandwidth of 4%, a minimum insertion loss of 3.2 dB, outperforming the incumbent surface acoustic wave counterparts. Multiple acoustic delay lines with center frequencies from 0.9 to 2 GHz have been demonstrated, underscoring their great frequency scalability. The acoustic delay lines use single-phase unidirectional transducers design to launch and propagate the S0 mode in an X-cut lithium niobate thin film with large electromechanical coupling and low damping. The demonstrated acoustic delay lines can enable wide-range and high-resolution delay synthesis that is highly sought-after for the self-interference cancellation in full-duplex radios.

Original languageEnglish (US)
Title of host publication2019 IEEE 32nd International Conference on Micro Electro Mechanical Systems, MEMS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages121-124
Number of pages4
ISBN (Electronic)9781728116105
DOIs
StatePublished - Jan 2019
Event32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019 - Seoul, Korea, Republic of
Duration: Jan 27 2019Jan 31 2019

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2019-January
ISSN (Print)1084-6999

Conference

Conference32nd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2019
Country/TerritoryKorea, Republic of
CitySeoul
Period1/27/191/31/19

ASJC Scopus subject areas

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

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