Antenna Parameters for On-Body Communications with Wearable and Implantable Antennas

verfasst von
Lukas Berkelmann, Dirk Manteuffel
Abstract

In this article, redefined antenna parameters regarding the additional effects occurring with on-body propagation are derived to enable a standardized characterization of on-body antennas. A model for the on-body propagation of arbitrary wearable and implantable antennas using Green's functions based on the Norton surface wave theory and the surface equivalence principle is presented, which subsequently is used as an on-body near-field-to-far-field transformation. The defined on-body far-field enables the redefinition of the antenna parameters (gain, effective area, and efficiency) for the on-body case. Based thereon, the antennas can be deembedded from the on-body channel and the on-body link between two antennas can be calculated by an adapted Friis transmission equation similar to free-space propagation. It is demonstrated by two examples, one of a hearing aid antenna and another of an antenna of an implantable pacemaker, that the on-body antenna parameters allow for an educated design of the antennas without the necessity of electromagnetic modeling of the entire system.

Organisationseinheit(en)
Institut für Hochfrequenztechnik und Funksysteme
Typ
Artikel
Journal
IEEE Transactions on Antennas and Propagation
Band
69
Seiten
5377-5387
Anzahl der Seiten
11
ISSN
0018-926X
Publikationsdatum
03.09.2021
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Elektrotechnik und Elektronik
Fachgebiet (basierend auf ÖFOS 2012)
Mikrowellentechnik
Elektronische Version(en)
https://doi.org/10.1109/tap.2021.3060944 (Zugang: Geschlossen)
 

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