SLAC develops piezo-electric VLF antenna

Discussion in 'The Low Bands - 630/2200 Meters - VLF' started by W0RIO, Apr 12, 2019.

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  1. W0RIO

    W0RIO Ham Member QRZ Page

    Phys.org has an article about a new compact VLF antenna that was developed at SLAC:
    https://phys.org/news/2019-04-slac-compact-antenna-radios.html

    "The researchers used a rod-shaped crystal of a piezoelectric material, lithium niobate, as their antenna. When they applied an oscillating electric voltage to the rod it vibrated, alternately shrinking and expanding, and this mechanical stress triggered an oscillating electric current whose electromagnetic energy then got emitted as VLF radiation."

    SlacVLFant.png

    The antenna apparently operates at 35Khz, has a Q factor of 300,000
    and can be slightly tuned via piezoelectric methods.
    The scientific details can be found here:
    https://www.nature.com/articles/s41467-019-09680-2
     
  2. W0RIO

    W0RIO Ham Member QRZ Page

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