Hi Victor,
in the 1990s, I was involved with similar work in the context of a
superconducting MRI receive coil *. To avoid the losses of the capacitors
and the connections, we used a self resonant double-spiral design, using the
LaAlO3 substate as a high-Q dielectric. At 8.25 MHz, Q-factors of up to
500000 were achieved.
Best regards,
Markus (DF6NM)
* M. Vester, F. Steinmeyer, B. Roas, G. Thummes, K. Klundt
"HTS surface coils with liquid nitrogen or pulse tube refrigeration"
Proc. Soc. Magn. Reson., vol. 3, p. 1528, 1997
From: [email protected]
Sent: Saturday, October 01, 2011 8:59 AM
To: [email protected]
Subject: RE: LF: Ferrite RX antennas
Hi Stefan,
at the institute I am working we are using lithographic superconducting
coils with special NPO capacitors In the range from 100KHz to 5MHz Q up to
5000 is optained....
73
Victor
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