| US 7,521,932 B2 | ||
| Method and system for adjusting the fundamental symmetric mode of coupled high temperature superconductor coils | ||
| Charles F. Carter, III, Wilmington, Del. (US); Daniel B. Laubacher, Wilmington, Del. (US); James D. McCambridge, Swarthmore, Pa. (US); Charles Wilker, Wilmington, Del. (US); and Jiunn Sheng, Newark, Del. (US) | ||
| Assigned to The Penn State Research Foundation, University Park, Pa. (US) | ||
| Filed on Apr. 29, 2004, as Appl. No. 10/835,345. | ||
| Claims priority of provisional application 60/468220, filed on May 06, 2003. | ||
| Claims priority of provisional application 60/498045, filed on Aug. 27, 2003. | ||
| Claims priority of provisional application 60/541144, filed on Feb. 02, 2004. | ||
| Prior Publication US 2005/0046420 A1, Mar. 03, 2005 | ||
| Int. Cl. G01V 3/00 (2006.01) | ||
| U.S. Cl. 324—318 [324/322] | 10 Claims |
| 1. A frequency detection system comprising:
two essentially identical coupled planar high temperature superconductor self-resonant coils, said coils being able to detect
signals having a predetermined fundamental symmetric mode resonance frequency, wherein said two coils are parallel; and
means for tuning the resonance frequency of said coupled coils to said fundamental symmetric mode frequency by varying one
or more distances between said coils,
wherein said means comprises micropositioners to vary the distance between the planes of said two coils from essentially zero
to about 50% of the radius of the coils.
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