ASIC-based batteryless implantable telemetry microsystem for recording purposes

Parramon, J.; Doguet, Pascal; Marı́n, David; Verleyssen, M.; Muñoz, Robert; Leija, L.; Valderrama, Elena

doi:10.1109/iembs.1997.758801

Cited by 35 publications

(18 citation statements)

References 4 publications

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“…This threshold has been estimated close to 1 MHz [20]. Usually, inductive links for the remote powering of implantable devices operate in a slightly higher frequency range, between 1 MHz and 13.56 MHz, with two dedicated frequencies at 6.78 MHz and 13.56 MHz [10]- [15], [21], [22]. Thus, frequency limitations are a drawback of using litz-wire coils for the remote powering of implantable sensors.…”

Section: Design Techniques For Inductive Linksmentioning

confidence: 99%

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A Study of Multi-Layer Spiral Inductors for Remote Powering of Implantable Sensors

Olivo

Carrara

Micheli

2013

IEEE Trans. Biomed. Circuits Syst.

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Abstract-An approach based on multi-layer spiral inductors to remotely power implantable sensors is investigated. As compared to single-layer inductors having the same area, multi-layer printed inductors enable a higher efficiency (up to 35% higher) and voltage gain (almost one order of magnitude higher). A system conceived to be embedded into a skin patch is designed to verify the performance. The system is able to transmit up to 15 mW over a distance of 6 mm and up to 1.17 mW where a 17 mm beef sirloin is placed between the inductors. Furthermore, the system performs downlink communication (up to 100 kbps) and uplink communication based on the backscattering technique (up to 66.6 kbps). Long-range communication is achieved by means of a bluetooth module.Index Terms-Energy harvesting, implantable sensors, inductive link, multi-layer spiral inductors, remote powering.

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Section: Design Techniques For Inductive Linksmentioning

confidence: 99%

“…Most of the inductive links presented in the literature operate at frequencies of few megahertz [10]- [15], [21], [22], [35], generally below 10 MHz. This upper limit is often adopted to minimize the quantity of power absorbed by the tissues and increase the link efficiency.…”

Section: B Working Frequencymentioning

confidence: 99%

A Study of Multi-Layer Spiral Inductors for Remote Powering of Implantable Sensors

Olivo

Carrara

Micheli

2013

IEEE Trans. Biomed. Circuits Syst.

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“…Parramon [8] has reported an inductively powered implantable telemetry microsystem that measures 30 mm (excluding off-chip passive components) and consumes 24.5 mA of current. The system receives signals by modulating the amplitude of the inductive power supply, and transmits neural signals at a rate of up to 468 kbps via FSK; however, the system was not fully functional at the time publication.…”

Section: Existing Approaches For Developing Neural Recording Techmentioning

confidence: 99%

A TinyOS-Enabled MICA2-Based Wireless Neural Interface

Farshchi

Nuyujukian

Pesterev

et al. 2006

IEEE Trans. Biomed. Eng.

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Abstract-Existing approaches used to develop compact low-power multichannel wireless neural recording systems range from creating custom-integrated circuits to assembling commercial-off-the-shelf (COTS) PC-based components. Custom-integrated-circuit designs yield extremely compact and low-power devices at the expense of high development and upgrade costs and turn-around times, while assembling COTS-PC-technology yields high performance at the expense of large system size and increased power consumption. To achieve a balance between implementing an ultra-compact custom-fabricated neural transceiver and assembling COTS-PC-technology, an overlay of a neural interface upon the TinyOS-based MICA2 platform is described. The system amplifies, digitally encodes, and transmits neural signals real-time at a rate of 9.6 kbps, while consuming less than 66 mW of power. The neural signals are received and forwarded to a client PC over a serial connection. This data rate can be divided for recording on up to 6 channels, with a resolution of 8 bits/sample. This work demonstrates the strengths and limitations of the TinyOS-based sensor technology as a foundation for chronic remote biological monitoring applications and, thus, provides an opportunity to create a system that can leverage from the frequent networking and communications advancements being made by the global TinyOS-development community.

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“…Inductive links are also used to perform bidirectional data communication with the implanted devices [8,12,13,15]. Downlink communication (from the external transmitter to the implanted device) can be obtained by modulating the power carrier generated by the transmitter.…”

Section: Introductionmentioning

confidence: 99%

“…In such a technique, a current flowing through an external inductor (transmitter) induces a current through one or more implanted inductors (receiver); thus, power is transmitted wirelessly through the body tissues. Several solutions have been proposed in the literature [8][9][10][11][12][13][14][15][16][17]. Commercial devices exploiting inductive links for the remote powering of implantable systems already reached the market [18].…”

Section: Introductionmentioning

confidence: 99%

Electronic Implants Power Delivery and Management

Olivo

Ghoreishizadeh

Carrara

et al. 2013

Design, Automation &Amp; Test in Europe Conference &Amp; Exhibition (DATE), 2013

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Abstract-A power delivery system for implantable biosensors is presented. The system, embedded into a skin patch and located directly over the implantation area, is able to transfer up to 15 mW wirelessly through the body tissues by means of an inductive link. The inductive link is also used to achieve bidirectional data communication with the implanted device. Downlink communication (ASK) is performed at 100 kbps; uplink communication (LSK) is performed at 66.6 kbps. The received power is managed by an integrated system including a voltage rectifier, an amplitude demodulator and a load modulator. The power management system is presented and evaluated by means of simulations.

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ASIC-based batteryless implantable telemetry microsystem for recording purposes

Cited by 35 publications

References 4 publications

A Study of Multi-Layer Spiral Inductors for Remote Powering of Implantable Sensors

A Study of Multi-Layer Spiral Inductors for Remote Powering of Implantable Sensors

A TinyOS-Enabled MICA2-Based Wireless Neural Interface

Electronic Implants Power Delivery and Management

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