Alexandre Schmid

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Publications associées (158)

A Low-Power and High-Precision Time- Domain Winner-Take-All Circuit Based on the Group Search Algorithm

Alexandre Schmid

In this paper, a low-power and high-precision time-domain winner-take-all (WTA) circuit is proposed which is based on a novel group search algorithm. The proposed method, which determines the winner input within a single clock cycle, not only demands no mu ...

Institute of Electrical and Electronics Engineers Inc.2024

Wirelessly Powered and Bi-Directional Data Communication System With Adaptive Conversion Chain for Multisite Biomedical Implants Over Single Inductive Link

Alexandre Schmid, Catherine Dehollain

A wirelessly powered and data communication system is presented which is implemented as a full system, designed for multisite implanted biomedical applications. The system is capable of receiving wireless power and data communication for each implant separ ...

2024

A High-Precision and High-Dynamic-Range Current-Mode WTA Circuit for Low-Supply-Voltage Applications

Alexandre Schmid, Mehdi Saberi

This brief proposes a low-voltage, high-precision, and high-dynamic-range current-mode analog winner-take-all (WTA) circuit. The proposed structure employs a new high-gain stage as a feedback network between the input node of each cell and the common node ...

2024

Programmable Seizure Detector Using a 32-bit RISC Processor for Implantable Medical Devices

Alexandre Schmid, Keyvan Farhang Razi

A programmable patient-customized epileptic seizure detector is proposed in this paper to enable neurologists and patients to have constructive interactions with the implantable medical device. The programmability feature is enabled by designing a low-powe ...

IEEE2023

High Input Impedance Front-End Amplifier for Noncontact Bio-Potential Recording

Alexandre Schmid

In this paper, a high input impedance front-end amplifier is proposed for non-contact bio-potential recording systems. The proposed structure uses a positive feedback network to deliver a neutralization current back to the input node of the circuit to neut ...

Institute of Electrical and Electronics Engineers Inc.2023

Power Feedback Control Unit for Closed-Loop Wirelessly Powered Biomedical Implants

Alexandre Schmid, Catherine Dehollain

Effective power management is crucial in designing wirelessly powered implants that have a long operational lifetime. It ensures that the received power is optimized for efficient operation and prevents damage caused by excessive or insufficient powering. ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2023

Digital One-Shot Charge-balancing Method for Implantable Current-Mode Electrical Stimulation

Alexandre Schmid, Keyvan Farhang Razi

A low-power digital charge balancing system, which ensures the safe operation of constant-current biphasic stimulation is presented. The concept of the proposed charge-balancing technique is to utilize a hybrid method consisting of anodic pulse modulation ...

IEEE2023

A 13.56MHz Active Rectifier with Digitally-Assisted and Delay Compensated Comparators for Biomedical Implantable Devices

Alexandre Schmid, Catherine Dehollain

This paper presents the design of a 13.56 MHz full-wave active rectifier that utilizes digitally-assisted and delay compensated comparators for wirelessly powered biomedical implants. The proposed design employs delay compensation and digital assistance te ...

New York2023

Design of a Dual-Band Wireless Power and Data Transfer Coil for Multisite Biomedical Implants

Alexandre Schmid, Catherine Dehollain

This paper introduces a dual-band inductive link designed to operate at both 6.78 and 13.56 MHz in the industrial, scientific, and medical (ISM) bands. The primary aim is to facilitate wireless power and data transmission in multisite biomedical implants. ...

New York2023

A Delay and Power Efficient Voltage Level Shifter with Low Leakage Power

Alexandre Schmid, Mehdi Saberi

This paper presents a new power-efficient and high-speed voltage level shifter. In the proposed structure, the existing contentions at the internal nodes are reduced using auxiliary transistors and feedback networks, leading to a significant reduction in t ...

IEEE2023

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Wirelessly Powered and Bi-Directional Data Communication System With Adaptive Conversion Chain for Multisite Biomedical Implants Over Single Inductive Link

Alexandre Schmid, Catherine Dehollain

2024