Exciter assemblies
First Claim
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1. A device comprising:
- a) a base substrate,b) first, second, third, and fourth exciter coils attached to said substrate and configured to generate a magnetic field for causing a tag to generate a signal,c) a balun circuit electrically linked to said first, second, third, and fourth exciter coils, andd) a plurality of witness station assemblies, wherein said witness station assembly comprises;
i) a witness coil, wherein said witness coil comprises;
A) a metal core having a coil-free proximal end, a coil-free distal end, and a central region, andB) coil windings wound around said central region of said metal core,ii) first and second witness coil brackets, andiii) first and second elastomeric parts,wherein said coil-free proximal end of said metal core is secured between said first witness coil bracket and said first elastomeric part, andwherein said coil-free distal end of said metal core is secured between said second witness coil bracket and said second elastomeric part.
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Abstract
Provided herein are systems, devices, assemblies, and methods for generating exciter signals, for example, to activate a remotely located tag. The systems, devices, assemblies, and methods find use in a variety of application including medical applications for the locating of a tag in a subject.
171 Citations
23 Claims
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1. A device comprising:
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a) a base substrate, b) first, second, third, and fourth exciter coils attached to said substrate and configured to generate a magnetic field for causing a tag to generate a signal, c) a balun circuit electrically linked to said first, second, third, and fourth exciter coils, and d) a plurality of witness station assemblies, wherein said witness station assembly comprises; i) a witness coil, wherein said witness coil comprises; A) a metal core having a coil-free proximal end, a coil-free distal end, and a central region, and B) coil windings wound around said central region of said metal core, ii) first and second witness coil brackets, and iii) first and second elastomeric parts, wherein said coil-free proximal end of said metal core is secured between said first witness coil bracket and said first elastomeric part, and wherein said coil-free distal end of said metal core is secured between said second witness coil bracket and said second elastomeric part. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A device comprising:
- an exciter assembly that cycles between generating at least first, second, and third magnetic fields for causing a tag to generate a signal, wherein said exciter assembly comprises;
a) a base substrate, b) a first exciter coil attached to said base substrate, wherein current in said first exciter coil travels clockwise when said first, second, and third magnetic fields are generated, c) a second exciter coil attached to said base substrate, wherein current in said second exciter coil travels clockwise when said first and second magnetic fields are generated, and travels counterclockwise when said third magnetic field is generated, d) a third exciter coil attached to said base substrate, wherein current in said third exciter coil travels clockwise when said first and third magnetic fields are generated, and travels counterclockwise when said second magnetic field is generated; and e) a fourth exciter attached to said base substrate, wherein current in said fourth exciter coil travels clockwise when said first magnetic field is generated, and travels counterclockwise when said second and third magnetic fields are generated. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
- an exciter assembly that cycles between generating at least first, second, and third magnetic fields for causing a tag to generate a signal, wherein said exciter assembly comprises;
Specification