Impedance-controlled implantable telemetry antenna
First Claim
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1. A system comprising:
- an implantable telemetry circuit having an output impedance;
an implantable antenna electrically connected to the implantable telemetry circuit, the implantable antenna having a controllable input impedance and including a first segment located between the implantable telemetry circuit and the remainder of the antenna; and
a return conductor comprising a portion of an implantable assembly housing; and
wherein the input impedance is controlled at least in part using an angle of at least a portion of the first segment with respect to the return conductor, the portion including an incline with respect to the return conductor, and the portion configured to provide a substantially conjugate match to the output impedance of the implantable telemetry circuit.
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Abstract
A physical arrangement can be provided between at least a portion of a first segment of an implantable antenna with respect to a return conductor, and an input impedance of the implantable antenna can be controlled using the physical arrangement to provide a substantially conjugate match to an output impedance of an implantable telemetry circuit coupled to the implantable antenna.
29 Citations
28 Claims
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1. A system comprising:
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an implantable telemetry circuit having an output impedance; an implantable antenna electrically connected to the implantable telemetry circuit, the implantable antenna having a controllable input impedance and including a first segment located between the implantable telemetry circuit and the remainder of the antenna; and a return conductor comprising a portion of an implantable assembly housing; and wherein the input impedance is controlled at least in part using an angle of at least a portion of the first segment with respect to the return conductor, the portion including an incline with respect to the return conductor, and the portion configured to provide a substantially conjugate match to the output impedance of the implantable telemetry circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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providing an angle of at least a portion of a first segment of an implantable antenna of a first medical device with respect to a return conductor, the portion including an incline with respect to the return conductor; and controlling an input impedance of the implantable antenna using the portion of the first segment provide a substantially conjugate match to an output impedance of an implantable telemetry circuit of the first medical device coupled to the implantable antenna; wherein the return conductor comprises a portion of an implantable assembly housing; and wherein the first segment is located between the implantable telemetry circuit and the remainder of the antenna. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification