Antenna for an implantable medical device
First Claim
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1. An implantable medical device, comprising:
- a housing for containing electronic circuitry;
an antenna embedded in a dielectric compartment; and
circuitry within the housing connected to the antenna for transmitting and receiving a modulated radio-frequency carrier at a specified carrier frequency.
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Abstract
An apparatus and method for enabling far-field radio-frequency communications with an implantable medical device in which an antenna is embedded within a dielectric compartment of the device. A helical antenna may be employed to save space while still permitting far-field telemetry over a desired range of frequencies.
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Citations
20 Claims
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1. An implantable medical device, comprising:
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a housing for containing electronic circuitry;
an antenna embedded in a dielectric compartment; and
circuitry within the housing connected to the antenna for transmitting and receiving a modulated radio-frequency carrier at a specified carrier frequency. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20)
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14. A method for transmitting and receiving radio-frequency signals in an implantable medical device, comprising:
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transmitting or receiving a modulated radio-frequency carrier at a specified carrier frequency to or from an antenna embedded within a dielectric compartment of the device; and
,matching the impedance of the antenna to the transmitting/receiving circuitry at a specified carrier frequency by loading the antenna with inductance or capacitance using an antenna tuning circuit, wherein a significant portion of radio-frequency energy delivered to the antenna at the specified frequency as far-field radiation.
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Specification