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Title: A high Q piezoelectric resonator as a portable VLF transmitter

Abstract

Very low frequency communication systems (3 kHz–30 kHz) enable applications not feasible at higher frequencies. However, the highest radiation efficiency antennas require size at the scale of the wavelength (here, >1 km), making portable transmitters extremely challenging. Facilitating transmitters at the 10 cm scale, we demonstrate an ultra-low loss lithium niobate piezoelectric electric dipole driven at acoustic resonance that radiates with greater than 300x higher efficiency compared to the previous state of the art at a comparable electrical size. A piezoelectric radiating element eliminates the need for large impedance matching networks as it self-resonates at the acoustic wavelength. Temporal modulation of this resonance demonstrates a device bandwidth greater than 83x beyond the conventional Bode-Fano limit, thus increasing the transmitter bitrate while still minimizing losses. These results will open new applications for portable, electrically small antennas.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [2];  [3];  [3]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  2. Gooch and Housego, LLC., Highland Heights, OH (United States)
  3. SRI International, Menlo Park, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1510219
Grant/Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE

Citation Formats

Kemp, Mark A., Franzi, Matt, Haase, Andy, Jongewaard, Erik, Whittaker, Matthew T., Kirkpatrick, Michael, and Sparr, Robert. A high Q piezoelectric resonator as a portable VLF transmitter. United States: N. p., 2019. Web. doi:10.1038/s41467-019-09680-2.
Kemp, Mark A., Franzi, Matt, Haase, Andy, Jongewaard, Erik, Whittaker, Matthew T., Kirkpatrick, Michael, & Sparr, Robert. A high Q piezoelectric resonator as a portable VLF transmitter. United States. doi:10.1038/s41467-019-09680-2.
Kemp, Mark A., Franzi, Matt, Haase, Andy, Jongewaard, Erik, Whittaker, Matthew T., Kirkpatrick, Michael, and Sparr, Robert. Fri . "A high Q piezoelectric resonator as a portable VLF transmitter". United States. doi:10.1038/s41467-019-09680-2. https://www.osti.gov/servlets/purl/1510219.
@article{osti_1510219,
title = {A high Q piezoelectric resonator as a portable VLF transmitter},
author = {Kemp, Mark A. and Franzi, Matt and Haase, Andy and Jongewaard, Erik and Whittaker, Matthew T. and Kirkpatrick, Michael and Sparr, Robert},
abstractNote = {Very low frequency communication systems (3 kHz–30 kHz) enable applications not feasible at higher frequencies. However, the highest radiation efficiency antennas require size at the scale of the wavelength (here, >1 km), making portable transmitters extremely challenging. Facilitating transmitters at the 10 cm scale, we demonstrate an ultra-low loss lithium niobate piezoelectric electric dipole driven at acoustic resonance that radiates with greater than 300x higher efficiency compared to the previous state of the art at a comparable electrical size. A piezoelectric radiating element eliminates the need for large impedance matching networks as it self-resonates at the acoustic wavelength. Temporal modulation of this resonance demonstrates a device bandwidth greater than 83x beyond the conventional Bode-Fano limit, thus increasing the transmitter bitrate while still minimizing losses. These results will open new applications for portable, electrically small antennas.},
doi = {10.1038/s41467-019-09680-2},
journal = {Nature Communications},
issn = {2041-1723},
number = 1,
volume = 10,
place = {United States},
year = {2019},
month = {4}
}

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Works referenced in this record:

Physical Limitations of Omni?Directional Antennas
journal, December 1948

  • Chu, L. J.
  • Journal of Applied Physics, Vol. 19, Issue 12, p. 1163-1175
  • DOI: 10.1063/1.1715038