Antenna design and interrogator system
First Claim
Patent Images
1. An arrangement of coils, comprising:
- a first coil having at least two first windings;
a second coil having at least a second winding;
the second winding being juxtaposed intermediate the at least two first windings;
wherein the first coil comprises 2, 3 or more than 3 windings; and
wherein at least one of the first coil and the second coil comprises a first layer of parallel spaced conductors and a second parallel layer of orthogonally oriented parallel spaced conductors for three dimensional operations.
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Abstract
A series of parallel spaced conductors through which currents are sequentially switched. A spatial relationship of the sequentially switched currents is chosen such that, at different times, tangential and normal magnetic fields are produced at the same location. The conductors are preferably arranged in a planar fashion and the tangential and normal magnetic fields are produced above the planar surface. A single layer of parallel spaced conductors provides substantially two dimensional operations. Adding a second parallel layer of orthogonally oriented parallel spaced conductors provides substantially three dimensional operations where currents are sequentially switched in both layers.
36 Citations
60 Claims
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1. An arrangement of coils, comprising:
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a first coil having at least two first windings; a second coil having at least a second winding; the second winding being juxtaposed intermediate the at least two first windings; wherein the first coil comprises 2, 3 or more than 3 windings; and wherein at least one of the first coil and the second coil comprises a first layer of parallel spaced conductors and a second parallel layer of orthogonally oriented parallel spaced conductors for three dimensional operations. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 59, 60)
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2. An arrangement of coils, comprising:
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a first coil having at least two first windings; a second coil having at least a second winding; the second winding being juxtaposed intermediate the at least two first windings; switching means adapted to switch currents sequentially through the first winding and then at least the second winding; and wherein a spatial relationship of sequentially switched currents is chosen to ensure that at different times tangential and normal magnetic fields are produced at substantially a same location. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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13. An interrogator including an arrangement of coils comprising:
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a first coil having at least two first windings; a second coil having at least a second winding; the second winding being juxtaposed intermediate the at least two first windings; wherein the first coil comprises 2, 3 or more than 3 windings; and wherein at least one of the first coil and the second coil comprises a first layer of parallel spaced conductors and a second parallel layer of orthogonally oriented parallel spaced conductors for three dimensional operations. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 33, 34, 35)
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21. A method of energizing a first arrangement of coils and a second arrangement of coils, the first coils having at least two first windings and the second coil having at least a second windings, the second winding being juxtaposed intermediate the first windings, the method comprising the steps of:
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energizing the first coil; energizing the second coil; providing at least one of a first coil and a second coil comprising a first layer of parallel spaced conductors and a second parallel layer of orthogonally oriented parallel spaced conductors for three dimensional operations; and wherein the first coil and the second coil are alternately switched. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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48. An interrogator including an arrangement of coils comprising:
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a first coil having at least two first windings; a second coil having at least a second winding; the second winding being juxtaposed intermediate the at least two first windings; switching means adapted to switch currents sequentially through the first winding and then at least the second winding; and wherein a spatial relationship of sequentially switched currents is chosen to ensure that at different times tangential and normal magnetic fields are produced at substantially a same location. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58)
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Specification