Guides for r.f. magnetic flux

Details Guides for r.f. magnetic flux Guides for r.f. magnetic flux

2007-01-30

2007-01-30

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Transmission line inductive or radiation interference...

C324S300000, C174S353000

Reexamination Certificate

active

10220734

ABSTRACT:
Microstructure materials which can be tuned to a particular range of r.f. frequencies to display particular magnetic permeabilities have been proposed. A typical material is made of an array of capacitive elements e.g. spirals or rolls of conducting material on a non-conducting substrate. These materials can be used as a guide which is effective for the particular band of frequencies to which it is tuned. In one example, the rolls (2ato2c) guide magnetic flux along ducts (1, 2, 3) while rolls (4a,5a) guide magnetic flux along ducts (4, 5). Flux can thus be guided upwardly along duct (2), along ducts (4and5), and down ducts (1, 3), or vice versa.

REFERENCES:
patent: 5223849 (1993-06-01), Kasevich et al.
patent: 5270656 (1993-12-01), Roberts et al.
patent: 5363845 (1994-11-01), Chowdhury et al.
patent: 5760584 (1998-06-01), Frederick
patent: 6043658 (2000-03-01), Leussler
patent: 6535755 (2003-03-01), Ehnholm
patent: 6608811 (2003-08-01), Holden et al.
patent: 6768051 (2004-07-01), Wiltshire et al.
patent: 6801173 (2004-10-01), Wiltshire
patent: 6819106 (2004-11-01), Young et al.
patent: 6927574 (2005-08-01), Young et al.
patent: WO 00/41270 (2000-07-01), None
patent: WO 01/67125 (2001-09-01), None
patent: WO 01/67549 (2001-09-01), None
Pendry et al., “Magnetism From Conductors And Enhanced Nonlinear Phenomena”, IEEE Transactions ON Microwave Theory And Techniques, vol. 47(11):2075-2084, (1999).
Wiltshire M.C.K., et al, “Microstructured Magnetic Materials for RF Flux Guides in Magnetic Resonance Imaging”; Science American Association for the Advancement of Science, US, vol. 291, No. 5505, Feb. 2, 2001, pp. 849-851.
Kwiat D, et al, :A Decoupled Coil Detector Array for Fast Image Acquisition in Magnetic Resonance Imaging, Medical Physics, American Institute of Physics, New York, US, vol. 18, No. 2, Mar. 1, 1991, pp. 251-265.

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