Split-can dipole antenna for an implantable medical device
First Claim
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1. A method for operating an implantable medical device, comprising:
- transmitting or receiving radio-frequency (RF signals using RF circuitry connected to a dipole antenna formed by first and second conductive portions of a housing of the implantable medical device;
matching an impedance of the dipole antenna to the RF circuitry at a specified carrier frequency using an antenna tuning circuit;
delivering electrostimulation from therapy circuitry of the implantable medical device using a therapy lead and the housing as electrodes; and
,employing the antenna tuning circuit as a high-pass filter to block low-frequency energy generated by the electrostimulation from being received by the RF circuitry.
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Abstract
An apparatus and method for enabling far-field radio-frequency communications with an implantable medical device utilizing the device housing as an antenna. Such radio-frequency communications can take place over much greater distances than with inductively coupled antennas.
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Citations
15 Claims
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1. A method for operating an implantable medical device, comprising:
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transmitting or receiving radio-frequency (RF signals using RF circuitry connected to a dipole antenna formed by first and second conductive portions of a housing of the implantable medical device; matching an impedance of the dipole antenna to the RF circuitry at a specified carrier frequency using an antenna tuning circuit; delivering electrostimulation from therapy circuitry of the implantable medical device using a therapy lead and the housing as electrodes; and
,employing the antenna tuning circuit as a high-pass filter to block low-frequency energy generated by the electrostimulation from being received by the RF circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification