IEEE Circuits and Systems Magazine - Q3 2019 - 23
Simultaneous Inductive
Power and Data
Transmission System
for Smart Applications
©ISTOCKPHOTO.COM/VERTIGO3D
Feature
Martin Trautmann, Benedikt Sanftl, Robert Weigel,
and Alexander Koelpin
Abstract
Inductive power transfer (IPT) development is a big issue amongst
the scientific community but there are only few solutions for communication between the primary and secondary side. This article
presents a completely contactless near field system, which can
provide power and data simultaneously using one common inductive power link. In this novel approach both transmission channels are designed collaboratively to maximize their performance.
Based on these joint system specifications, the requirements for
each system are derived, analyzed, simulated and measured.
From this measurement the performance of the system is classified. To verify the joint specifications, the mutual interferences
are evaluated and the system is compared to the state of the art.
Digital Object Identifier 10.1109/MCAS.2019.2924508
Date of publication: 13 August 2019
THIRD QUARTER 2019
1531-636X/19©2019IEEE
As a result, a prototype, which can provide 20 W of power with a
simultaneous data transfer of 461 kbit/s, is presented. With tested
bit error rates smaller than 10-6, this communication link is a fully
classified robust and reliable data link for IPT applications.
I. Introduction
nductive power transfer (IPT) was made possible
by the inventions from Nikola Tesla at the end of
the 19th century but was not viable until the end of
the 20th century [1]. In 1965 Schuder and Stephenson
published an article for the use of IPT in biomedical
implants [2]. The research in this area was pushed further and is still under development [3], [4]. The great
advantages of IPT like its resistance to pollutants, its
ability to act in harsh environments, ease of use and
I
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23
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IEEE Circuits and Systems Magazine - Q3 2019
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