Title :
Investigation of superconducting thick-film helical resonator
Author :
Centeno, A.E.R. ; Excell, P.S. ; Button, T.W. ; Alford, N.M.
Author_Institution :
Bradford Univ., UK
fDate :
3/1/1995 12:00:00 AM
Abstract :
A superconducting helical resonator is described that resonates at a lowest order mode resonance of 43.42 MHz, when a half-wavelength long, and at multiples of this frequency. Using reflection measurements the Q factor was measured at the second resonance (86.70 MHz) between 25 K and 90 K for a superconducting YBa/sub 2/Cu/sub 3/O/sub x/ (YBCO) helix on a tubular yttria-stabilized zirconia (YSZ) substrate. Experimental investigation showed a Q factor significantly better than that for a copper-wire helix below 77 K; the losses were dominated by the dielectric.<>
Keywords :
Q-factor; barium compounds; high-temperature superconductors; superconducting resonators; thick film devices; yttrium compounds; 25 to 90 K; 43.42 MHz; 86.70 MHz; Q factor; YBCO; YBa/sub 2/Cu/sub 3/O; YBa/sub 2/Cu/sub 3/O/sub x/ helix; YSZ; ZrO/sub 2/-Y/sub 2/O/sub 3/; dielectric; losses; reflection measurements; superconducting thick-film helical resonator; tubular yttria-stabilized zirconia substrate; Circuits; Coils; Copper; Dielectric substrates; Frequency; Q factor; Q measurement; Resonance; Superconductivity;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
