Publication

A Magnetoelectric Wireless Power Transfer System with a 97.25%-Efficient Load-Adaptive CMOS Rectifier for Miniaturized Implants

2025

Abstract

Fully implantable systems such as neural interfaces require wireless power delivery to eliminate bulky batteries and reduce the need for replacement surgeries. The growing functional complexity of implants, which now integrate sensing, stimulation, signal processing, and machine learning [1], continues to increase their power demands. These devices have diverse power needs, with high-power modes during training and low-power operation during inference, making flexible and efficient power delivery essential to support emerging applications. Yet, efficient power delivery to miniature implants remains challenging, particularly in the presence of misalignment, variable load conditions, and safety constraints.

Official source

https://infoscience.epfl.ch/entities/publication/92bed809-2877-4154-ae91-7a73f2ac21db

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2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/92bed809-2877-4154-ae91-7a73f2ac21db

About this result

Related concepts (32)

Power supply

A power supply is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are separate standalone pieces of equipment, while others are built into the load appliances that they power. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.

Peak demand

Peak demand on an electrical grid is simply the highest electrical power demand that has occurred over a specified time period (Gönen 2008). Peak demand is typically characterized as annual, daily or seasonal and has the unit of power. Peak demand, peak load or on-peak are terms used in energy demand management describing a period in which electrical power is expected to be provided for a sustained period at a significantly higher than average supply level. Peak demand fluctuations may occur on daily, monthly, seasonal and yearly cycles.

Demand response

Demand response is a change in the power consumption of an electric utility customer to better match the demand for power with the supply. Until the 21st century decrease in the cost of pumped storage and batteries electric energy could not be easily stored, so utilities have traditionally matched demand and supply by throttling the production rate of their power plants, taking generating units on or off line, or importing power from other utilities.

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A Magnetoelectric Wireless Power Transfer System with a 97.25%-Efficient Load-Adaptive CMOS Rectifier for Miniaturized Implants

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