METHOD AND APPARATUS FOR ANTENNA SELECTION IN A DIVERSITY ANTENNA SYSTEM FOR COMMUNICATING WITH IMPLANTABLE MEDICAL DEVICE
First Claim
Patent Images
1. A diversity antenna system comprising:
- a plurality of antennas configured to transmit an outgoing signal to an implantable medical device and to receive an incoming signal from the implantable medical device;
a transceiver configured to transmit outgoing data frames by modulating the outgoing signal and to receive incoming data frames by demodulating the incoming signal;
an antenna control circuit including at least one of a random sequence generator configured to generate a random antenna selection signal or a predetermined sequence generator configured to generate a predetermined antenna selection signal according to a predetermined sequence, wherein the antenna control circuit is configured to produce an antenna control signal using at least one of the random antenna selection signal or the predetermined antenna selection signal; and
an antenna interface circuit configured to connect an antenna of the plurality of antennas to the transceiver using the antenna selection signal.
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Abstract
A diversity antenna system including a plurality of antennas can include an antenna interface circuit configured to connect an antenna of the plurality of antennas to a transceiver using an antenna selection signal. The antenna control circuit can be configured to produce the antenna selection signal using at least one of a random sequence generator configured to generate a random antenna selection signal or a predetermined sequence generator configured to generate a predetermined antenna selection signal according to a predetermined sequence.
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Citations
20 Claims
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1. A diversity antenna system comprising:
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a plurality of antennas configured to transmit an outgoing signal to an implantable medical device and to receive an incoming signal from the implantable medical device; a transceiver configured to transmit outgoing data frames by modulating the outgoing signal and to receive incoming data frames by demodulating the incoming signal; an antenna control circuit including at least one of a random sequence generator configured to generate a random antenna selection signal or a predetermined sequence generator configured to generate a predetermined antenna selection signal according to a predetermined sequence, wherein the antenna control circuit is configured to produce an antenna control signal using at least one of the random antenna selection signal or the predetermined antenna selection signal; and an antenna interface circuit configured to connect an antenna of the plurality of antennas to the transceiver using the antenna selection signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A diversity antenna system configured to avoid transmission failure associated with a null, the system comprising:
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a plurality of antennas configured to transmit an outgoing signal to an implantable medical device and to receive an incoming signal from the implantable medical device; a transceiver configured to transmit outgoing data frames by modulating the outgoing signal and to receive incoming data frames by demodulating the incoming signal; an antenna control circuit configured to produce an antenna selection signal, the antenna control circuit including; at least one of a random sequence generator configured to generate a random antenna selection signal or a predetermined sequence generator configured to generate a predetermined antenna selection signal according to a predetermined sequence, wherein the predetermined sequence including at least one of a predetermined schedule or a predetermined period, and wherein the predetermined period includes a period of approximately 50 milliseconds to 500 milliseconds, and wherein the antenna control circuit is configured to produce the antenna control signal using at least one of the random antenna selection signal or the predetermined antenna selection signal; and an antenna switching timing circuit configured to hold the antenna selection signal while an outgoing data frame is being transmitted or a frame of the incoming data frames is being received; and an antenna interface circuit configured to connect an antenna of the plurality of antennas to the transceiver using the antenna selection signal.
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12. A method for operating a telemetry system communicating with an implantable medical device, 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 a diversity antenna system including a plurality of antennas, wherein transmitting the outgoing signal includes transmitting outgoing data frames by modulating the outgoing signal, and receiving the incoming signal includes receiving incoming data frames by demodulating the incoming signal; and selecting an antenna of the plurality of antennas using an antenna selection signal, the antenna selection signal including at least one of a random antenna selection signal or a predetermined antenna selection signal generated according to a predetermined sequence. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification