Date: Tue, 22 May 2018 16:32:34 +0000 (UTC)
From: John Fisher <johnfish837@yahoo.ca>
To:  <rsgb_lf_group@blacksheep.org>
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Subject: Re: VLF: Effective Antennas 1/1000th of a Wavelength
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>From the article:

Their ME antennas are fabricated as suspended ferromagnetic-piezoelectric thin-film heterostructures that transmit and receive radio waves through the ME effect at their acoustic resonance frequencies.[2] In transmission, the bulk acoustic waves in the ME antennas stimulate magnetic oscillations in the magnetic thin film, and these oscillations produce electromagnetic radiation. Conversely, in radio reception, the ME antennas convert the magnetic fields of electromagnetic waves to acoustic waves using the piezoelectric effect.[2] 
The concept for this type of antenna was theoretically proposed in 2015.[5] When the excitation was via surface acoustic waves, such devices only worked at a few kilohertz. The antennas of the present study are based on bulk acoustic waves, and they perform as well as conventional antennas, but at a hundred times smaller size.[2] The concept was demonstrated at at VHF and UHF frequencies.[2] 

--------------------------------------------
On Tue, 5/22/18, Wolfgang Büscher <dl4yhf@freenet.de> wrote:

 Subject: Re: VLF: Effective Antennas 1/1000th of a Wavelength
 To: rsgb_lf_group@blacksheep.org
 Received: Tuesday, May 22, 2018, 12:06 PM
 
 Now all we need it the TX-capable
 counterpart.
 Because the ultra-narrow-band
 thing described in the article is 
 receive-only.
 
 On
 22.05.2018 00:42, John Fisher wrote:
 >
 Exciting new developments in radio recently...New methods
 and materials enable effective antennas as short as 1/1000th
 of a wavelength...That's like a 3 inch antenna at 80m
 working like a full sized dipole...
 >
 > http://tikalon.com/blog/blog.php?article=2017/mini_antenna
 >