A mm-sized wirelessly powered and remotely controlled locomotive implantable device

Yakovlev, Anatoly; Pivonka, Daniel; Meng, Tao; Poon, Ada S. Y.

doi:10.1109/isscc.2012.6177023

Cited by 27 publications

(15 citation statements)

References 6 publications

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“…Despite the challenges associated with a highly complex socio-technical system context and the current lack of clear LoC-based PoC IVMT system design methodologies, we believe that such a design for evolvability can promote end-user system adoption. We also conjecture that most of the observations and some of the architectural features evoked in this work may not only apply to LoCbased PoC IVMT systems but also to the emerging Lab-ina-Body systems and applications [44]- [46].…”

Section: Discussionmentioning

confidence: 75%

A Smart Mobile Lab-on-Chip-Based Medical Diagnostics System Architecture Designed for Evolvability

Patou

Svendsen

Kjaegaard

et al. 2015

2015 Euromicro Conference on Digital System Design

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Abstract-Unprecedented knowledge levels in life sciences along with technological advances in micro-and nanotechnologies and microfluidics have recently conditioned the advent of Lab-on-Chip (LoC) devices for In-Vitro Medical Testing (IVMT). Combined with smart-mobile technologies, LoCs are pervasively giving rise to opportunities to better diagnose disease, predict and monitor personalised treatment efficacy, or provide healthcare decision-making support at the Pointof-Care (PoC). Although made increasingly available to the consumer market, the adoption of LoC-based PoC In-Vitro Medical Testing (IVMT) systems is still in its infancy. This attrition partly pertains to the intricacy of designing and developing complex systems, destined to be used sporadically, in a fast-pace evolving technological paradigm. System evolvability is therefore key in the design process and constitutes the main motivation for this work. We introduce a smart-mobile and LoC-based system architecture designed for evolvability. By propagating LoC programmability, instrumentation, and control tools to the highlevel abstraction smart-mobile software layer, our architecture facilitates the realisation of new use-cases and the accommodation for incremental LoC-technology developments. We demonstrate these features with an implementation allowing the interfacing of LoCs embedding current-or impedancebased biosensors such as Silicon Nanowire Field Effect Transistors (SiNW-FETs) or electrochemical transducers. Structural modifications of these LoCs or changes in their specific operation may be addressed by the sole reengineering of the mobilesoftware layer, minimising system upgrade development and validation costs and efforts.

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Section: Discussionmentioning

confidence: 75%

A Smart Mobile Lab-on-Chip-Based Medical Diagnostics System Architecture Designed for Evolvability

Patou

Svendsen

Kjaegaard

et al. 2015

2015 Euromicro Conference on Digital System Design

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“…The matching efficiency can be maximized subject to practical limitations that arises in the integrated circuits (IC) implementation [16,17], and this paper briefly reviews the way introduced in [7] to calculate the maximum η m . The matching efficiency is given by…”

Section: Matching Efficiencymentioning

confidence: 99%

“…However, practical limitations to conjugate matching arise from the limited transformation range of the matching network. For typical implants with load impedance on the order of 1 kΩ [16,17], a limited Q-factor of matching network on the IC imposes the minimum load resistance condition R L > 10 Ω. (17) When the self-resistance of coil receiver is small, this condition limits our ability to perform conjugate matching, and was taken into account to calculate the achievable matching efficiency η m,av for a given receiver.…”

Section: Matching Efficiencymentioning

confidence: 99%

Non-Coil, Optimal Sources for Wireless Powering of Sub-Millimeter Implantable Devices

Kim¹,

Ho²,

Poon³

2017

PIER

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Abstract-This paper presents non-coil sources to improve the wireless power transfer efficiency for implantable device used in various medical applications -cardiovascular devices, endoscope in the small intestine, and neurostimulator in the brain. For each application, a bound on the power transfer efficiency and the optimal source achieving such bound are analytically solved. The results reveal that depending on the depth of the implantable devices, power can be transferred to a sub-millimeter scaled receiver with the efficiency ranging from −57 dB to −33 dB, which is up to 6.6 times higher than the performance of existing coil-based source systems. The technique introduced in this paper can be broadly applied to other medical applications.

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“…Nowadays, the wireless power transfer is being widely accepted in electronic implementations to improve device reliability and to extend battery life. These implementations mainly include wireless sensor networks (WSN) [2,3], radio frequency identification (RFID) [4,5] tags and smart biomedical devices [6,7]. The block diagram of a typical wireless power transfer mechanism is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

A complete analysis and measurement results of the threshold voltage cancellation scheme for RF to DC converter

Chouhan

Halonen

2015

Analog Integr Circ Sig Process

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In this work, the threshold voltage cancellation scheme for the RF-to-DC converter used in RF energy harvesting is presented. The proposed scheme reduces the threshold voltage of PMOS transistor used in CMOS rectifier with the use of additional CMOS components. The performance of the proposed scheme is evaluated against the conventional CMOS rectifier in terms of the power conversion efficiency (PCE). Measurements were done at 433 MHz RF frequency for resistive load values ranging from 1 to 120 KX. The measured peak PCE of the conventional CMOS and proposed rectifiers are 16 and 35 %, respectively, for the input RF power level of À8 dBm and resistive load of value 10 KX. The implementation of the proposed scheme is also tested in the multi-stage rectifier circuit (MSC) topology. All PMOS-based DTMOS-biased MSC circuit was selected to implement the proposed scheme and for performance comparison. The measured results show the PCE of a five stage DTMOS-biased MSC circuit is 15 % @ À6 dBm with 66 KX resistive load whereas after implementing proposed scheme on the alternate PMOS transistors of DTMOS-biased MSC circuit resulted into 19 % PCE for the same input and output conditions.

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A mm-sized wirelessly powered and remotely controlled locomotive implantable device

Cited by 27 publications

References 6 publications

A Smart Mobile Lab-on-Chip-Based Medical Diagnostics System Architecture Designed for Evolvability

A Smart Mobile Lab-on-Chip-Based Medical Diagnostics System Architecture Designed for Evolvability

Non-Coil, Optimal Sources for Wireless Powering of Sub-Millimeter Implantable Devices

A complete analysis and measurement results of the threshold voltage cancellation scheme for RF to DC converter

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