Modeling and Experimental Verification of Misalignment Tolerance in Inductive-Coupling Inter-Chip Link for Low-Power 3-D System Integration

Yoshida

Nakazato

2016

Jpn. J. Appl. Phys.

Self Cite

We present the world’s first charge-recycling-based low-power technique of complementary metal–oxide–semiconductor (CMOS) magnetic cell manipulation. CMOS magnetic cell manipulation associated with magnetic beads is a promissing tool for on-chip biomedical-analysis applications such as drug screening because CMOS can integrate control electronics and electro-chemical sensors. However, the conventional CMOS cell manipulation requires considerable power consumption. In this work, by concatenating multiple unit circuits and recycling electric charge among them, power consumption is reduced by a factor of the number of the concatenated unit circuits (1/N). For verifying the effectiveness, test chip was fabricated in a 0.6-µm CMOS. The chip successfully manipulates magnetic microbeads with achieving 49% power reduction (from 51 to 26.2 mW). Even considering the additional serial resistance of the concatenated inductors, nearly theoretical power reduction effect can be confirmed.

Section: Principle Of Power Reduction By Using the Proposed Platformsupporting

confidence: 89%

“…One is that the effectiveness of this architecture has been verified in the previous reports. [24][25][26][27][28] The other is that this architecture allows flexibility in current direction (manipulation's direction, drawing or detaching).…”

Section: Principle Of Power Reduction By Using the Proposed Platformmentioning

confidence: 99%

Design and experimental demonstration of low-power CMOS magnetic cell manipulation platform using charge recycling technique

Yoshida

Nakazato

2016

Jpn. J. Appl. Phys.

Self Cite

“…When the off-chip inductors were utilized, the performance variation due to the angle of transmission is inevitable. About this issue, the literature [31] reported that the inductivecoupling link has high immunity on misalignment between the transmitter and receiver inductors. The performance variation due to the angle of transmission can be modeled as well as the misalignment since both result in degradation of the coupling coefficient.…”

Section: Discussionmentioning

confidence: 99%

A Self-Powered Supply-Sensing Biosensor Platform Using Bio Fuel Cell and Low-Voltage, Low-Cost CMOS Supply-Controlled Ring Oscillator With Inductive-Coupling Transmitter for Healthcare IoT

IEEE Trans. Circuits Syst. I

Kobayashi

Nishio

et al. 2018

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This paper proposes a self-powered disposable supply-sensing biosensor platform for big-data-based healthcare applications. The proposed supply-sensing biosensor platform is based on bio fuel cells and a 0.23-V 0.25-µm zero-V th alldigital CMOS supply-controlled ring oscillator with a currentdriven pulse-interval-modulated inductive-coupling transmitter. The fully digital, and current-driven architecture uses zero-V th transistors, which enables low voltage operation and a small footprint, even in a cost-competitive legacy CMOS. This enables converterless self-powered operation using a bio fuel cell, which is ideal for disposable healthcare applications. To verify the effectiveness of the proposed platform, a test chip was fabricated using 0.25-µm CMOS technology. The experimental results successfully demonstrate operation with a 0.23-V supply, which is the lowest supply voltage reported for proximity transmitters. A self-powered biosensing operation using organic bio fuel cells was also successfully demonstrated. In addition, an asynchronous inductive-coupling receiver and an off-chip inductor for performance improvement were successfully demonstrated.

“…The transceiver design is based on the design used in a previous study. [31][32][33][34][35][36] Activation pulse is supplied into the chip through the off-chip pulse generator. The transmitter consists of buffers and a driver, which converts activation pulse to magnetic flux.…”

Section: Circuit Design Of Asynchronous Inductivecoupling Transceivermentioning

confidence: 99%

Design and experimental verification of CMOS magnetic-based microbead detection using an asynchronous intra-chip inductive-coupling transceiver

Kobayashi

Yoshida

et al. 2016

Jpn. J. Appl. Phys.

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In this study, an asynchronous intra-chip inductive-coupling transceiver was used to design and experimentally verify a CMOS magnetic-based microbeads detection system. Magnetic microbeads were employed for the surrounding living cells. These microbeads increased the magnetic flux and enabled the operation of an intra-chip inductive-coupling transceiver with a low transmitter supply voltage. Thus, by sensing the change in transmitter supply voltage, the system detected the living cells surrounded by microbeads. To verify the effectiveness of the proposed approach, a test chip was fabricated using 0.25 µm CMOS technology. The measured results successfully demonstrated the detection of microbeads.