Method and apparatus for operating a diversity antenna system for communicating with implantable medical device
First Claim
1. A system for communicating with an implantable medical device, the system comprising:
- a plurality of antennas configured to transmit an outgoing signal to the implantable medical device and receive an incoming signal from the implantable medical device;
a transceiver configured to transmit outgoing data frames by modulating the outgoing signal and receive incoming data frames by demodulating the incoming signal;
an antenna interface circuit configured to connect an antenna of the plurality of antennas to the transceiver according to an antenna selection signal; and
an antenna control circuit configured to assess quality of the incoming signal, time the assessment of the quality of the incoming signal using a predetermined communication protocol specifying timing for receiving the incoming data frames, and adjust the antenna selection signal using the assessed quality of the incoming signal.
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Abstract
A far-field radio frequency (RF) telemetry system for communicating with an implantable medical device includes a diversity antenna system. Multi-frame messages each including multiple outgoing data frames are transmitted to the implantable medical device. In response, the implantable medical device transmits response data frames each following one or more of the outgoing data frames, according to a predetermined communication protocol. An antenna control circuit selects an antenna of the diversity antenna system for transmitting the outgoing data frames and/or receiving the response data frames based the quality of signal reception associated with the response data frames.
46 Citations
20 Claims
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1. A system for communicating with an implantable medical device, the system comprising:
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a plurality of antennas configured to transmit an outgoing signal to the implantable medical device and receive an incoming signal from the implantable medical device; a transceiver configured to transmit outgoing data frames by modulating the outgoing signal and receive incoming data frames by demodulating the incoming signal; an antenna interface circuit configured to connect an antenna of the plurality of antennas to the transceiver according to an antenna selection signal; and an antenna control circuit configured to assess quality of the incoming signal, time the assessment of the quality of the incoming signal using a predetermined communication protocol specifying timing for receiving the incoming data frames, and adjust the antenna selection signal using the assessed quality of the incoming signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for communicating with an implantable medical device via telemetry, the method comprising:
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transmitting an outgoing signal to the implantable medical device and receiving an incoming signal from the implantable medical device using an active antenna selected from a plurality of antennas, the outgoing signal modulated by outgoing data frames, the incoming signal modulated by incoming data frames; monitoring quality of the incoming signal; timing the monitoring quality of the incoming signal using a predetermined communication protocol specifying timing for receiving the incoming data frames; and adjusting the selection of the active antenna based on the quality of the incoming signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification