Publication

A Suitable Metric for Maximum Received Power of Deep-Tissue Implantable Devices

Anja Skrivervik
2025

Abstract

This study investigates the maximum achievable received power for an implantable receiver deeply implanted in the human body, considering both electric dipole and magnetic loop sources with millimeter-scale dimensions. The analysis incorporates safety constraints related to the specific absorption rate. A full-wave simulation approach is employed for the case study. The results demonstrate that the proposed method can be applied to high-frequency simulations, where a received power of 0.16 W is achievable at 1.3 GHz under SAR consideration.

Official source

https://infoscience.epfl.ch/entities/publication/85d4ccd3-e5f5-41ea-8977-452a4c2d7115

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Anja Skrivervik
2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/85d4ccd3-e5f5-41ea-8977-452a4c2d7115

About this result

Related concepts (32)

Wireless power transfer

Wireless power transfer (WPT), wireless power transmission, wireless energy transmission (WET), or electromagnetic power transfer is the transmission of electrical energy without wires as a physical link. In a wireless power transmission system, an electrically powered transmitter device generates a time-varying electromagnetic field that transmits power across space to a receiver device; the receiver device extracts power from the field and supplies it to an electrical load.

Magnetic dipole

In electromagnetism, a magnetic dipole is the limit of either a closed loop of electric current or a pair of poles as the size of the source is reduced to zero while keeping the magnetic moment constant. It is a magnetic analogue of the electric dipole, but the analogy is not perfect. In particular, a true magnetic monopole, the magnetic analogue of an electric charge, has never been observed in nature. However, magnetic monopole quasiparticles have been observed as emergent properties of certain condensed matter systems.

Magnetic moment

In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. Examples of objects that have magnetic moments include loops of electric current (such as electromagnets), permanent magnets, elementary particles (such as electrons), composite particles (such as protons and neutrons), various molecules, and many astronomical objects (such as many planets, some moons, stars, etc).