MINIATURIZED ELECTRONIC DEVICE INGESTIBLE BY A SUBJECT OR IMPLANTABLE INSIDE A BODY OF THE SUBJECT
First Claim
1. A miniaturized in-body electronic device comprising:
- at least one antenna galvanically coupled to receive an AC signal through the body of a subject where the in-body electronic device is located;
power extraction circuitry configured to extract electrical power at least from the AC signal received by the antenna, the extracted electrical power being accumulated over a charging cycle;
a transmitter coupled to receive power from the power extraction circuitry; and
a controller coupled to the transmitter, wherein the controller is configured to activate the transmitter to generate a sequence of intermittent transmission bursts for transmitting an uplink signal, wherein a transmission burst comprises a power level consistent with the amount of electrical power being accumulated over the charging cycle.
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Accused Products
Abstract
A miniaturized in-body electronic device is provided. One or more antennas (e.g., 32) may be galvanically coupled to receive an alternating current (AC) signal through the body of a subject where the in-body electronic device is located. Power extraction circuitry (e.g., 36) is configured to extract electrical power from the AC signal received by the antenna. The extracted electrical power is used for electrically powering one or more components of the electronic device. A transmitter (e.g., 48) is coupled to receive power from the power extraction circuitry. A controller (e.g., 46) is coupled to the transmitter. The controller is configured to activate the transmitter to generate a sequence of intermittent transmission bursts for transmitting an uplink signal. A transmission burst may have a higher instantaneous power level than an instantaneous power level of the AC signal received by the antenna.
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Citations
17 Claims
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1. A miniaturized in-body electronic device comprising:
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at least one antenna galvanically coupled to receive an AC signal through the body of a subject where the in-body electronic device is located; power extraction circuitry configured to extract electrical power at least from the AC signal received by the antenna, the extracted electrical power being accumulated over a charging cycle; a transmitter coupled to receive power from the power extraction circuitry; and a controller coupled to the transmitter, wherein the controller is configured to activate the transmitter to generate a sequence of intermittent transmission bursts for transmitting an uplink signal, wherein a transmission burst comprises a power level consistent with the amount of electrical power being accumulated over the charging cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A miniaturized in-body electronic device comprising:
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at least one antenna galvanically coupled to receive an AC signal through the body of a subject; and AC logic circuitry responsive to a variable supply voltage resulting from the AC signal received by the antenna, the AC logic circuitry comprising a first circuit path responsive to a voltage difference during a positive voltage excursion of the variable supply voltage, the AC logic circuitry further comprising a second circuit path responsive to a voltage difference during a negative voltage excursion of the variable supply voltage; a memory coupled to the AC logic circuitry, wherein the AC logic circuitry is configured to extract data from the memory; ring oscillator circuitry energized by the variable supply voltage resulting from the AC signal received by the antenna, the ring oscillator circuitry configured to transmit a sequence of transmission bursts corresponding to respective binary states of the data extracted from the memory, the oscillator circuitry including a bias circuit to adjust an oscillator frequency, wherein a transmission burst is generated when each respective voltage difference has a value that meets or exceeds a threshold value. - View Dependent Claims (16, 17)
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Specification