Cable assembly for a coupling loop
First Claim
Patent Images
1. A cable assembly, comprising:
- a cable comprising;
a first coaxial cable;
a second coaxial cable;
an internal cable; and
an outer sheath surrounding the first coaxial cable, the second coaxial cable and the internal cable; and
a loop assembly comprising;
an energizing loop connected to the first coaxial cable for transmitting an energizing signal via the first coaxial cable and the energizing loop; and
a sensor coupling loop connected to the second coaxial cable for receiving a sensor signal via the second coaxial cable and the sensor coupling loop;
whereinto maximize isolation between the energizing signal and the sensor signal, the first coaxial cable and the second coaxial cable are positioned on opposite sides of the internal cable such that the first coaxial cable is in contact with one side of the internal cable and the second coaxial cable is in contact with an opposite side of the internal cable, and a position of the first coaxial cable relative to the second coaxial cable is maintained along a length of the cable.
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Abstract
A coupling loop or antenna is provided that can be used with a system that determines the resonant frequency of a sensor by adjusting the phase and frequency of an energizing signal until the frequency of the energizing signal matches the resonant frequency of the sensor. A cable attached to the coupling loop provides maximum isolation between the energizing signal and the sensor signal by maximizing the distance between the coaxial cables that carry the signals and maintaining the relative positions of the coaxial cables throughout the cable assembly.
65 Citations
18 Claims
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1. A cable assembly, comprising:
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a cable comprising; a first coaxial cable; a second coaxial cable; an internal cable; and an outer sheath surrounding the first coaxial cable, the second coaxial cable and the internal cable; and a loop assembly comprising; an energizing loop connected to the first coaxial cable for transmitting an energizing signal via the first coaxial cable and the energizing loop; and a sensor coupling loop connected to the second coaxial cable for receiving a sensor signal via the second coaxial cable and the sensor coupling loop; wherein to maximize isolation between the energizing signal and the sensor signal, the first coaxial cable and the second coaxial cable are positioned on opposite sides of the internal cable such that the first coaxial cable is in contact with one side of the internal cable and the second coaxial cable is in contact with an opposite side of the internal cable, and a position of the first coaxial cable relative to the second coaxial cable is maintained along a length of the cable. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A cable assembly, comprising:
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a cable comprising; a first coaxial cable; a second coaxial cable; a first internal cable; a second internal cable; a third internal cable; and an outer sheath surrounding the first coaxial cable, the second coaxial cable, the first internal cable, the second internal cable and the third internal cable; and a loop assembly, comprised of; an energizing loop connected to the first coaxial cable for transmitting an energizing signal via the first coaxial cable and the energizing loop; and a sensor coupling loop connected to the second coaxial cable for receiving a sensor signal via the second coaxial cable and the sensor coupling loop; wherein the first coaxial cable is adjacent to the first internal cable and the second internal cable, wherein the second coaxial cable is adjacent to the first internal cable and the third internal cable, and wherein the first coaxial cable and the second coaxial cable are positioned on opposite sides of the first internal cable such that the first coaxial cable is adjacent to one side of the first internal cable while the second coaxial cable is adjacent to an opposite side of the first internal cable. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A cable assembly, comprising:
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a cable comprising; a first coaxial cable; a second coaxial cable; a first internal cable; a second internal cable; a third internal cable; an inner shield surrounding the first internal cable, the second internal cable and the third internal cable; and an outer sheath surrounding the first coaxial cable, the second coaxial cable and the inner shield, wherein the first coaxial cable and the second coaxial cable are between the inner shield and the outer sheath; and a loop assembly comprising; an energizing loop connected to the first coaxial cable for transmitting an energizing signal via the first coaxial cable and the energizing loop; and a sensor coupling loop connected to the second coaxial cable for receiving a sensor signal via the second coaxial cable and the sensor coupling loop; wherein the first coaxial cable and the second coaxial cable are positioned on opposite sides of the inner shield such that the first coaxial cable is adjacent to one side of the inner shield while the second coaxial cable is adjacent to an opposite side of the inner shield. - View Dependent Claims (16, 17, 18)
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Specification