Rules of Thumb to Assess Losses of Implanted Antennas

Mingxiang Gao (1) , Denys Nikolayev (2) , Marko Bosiljevac (3) , Zvonimir Sipus (3) , Anja K. Skrivervik (1)

1 EPFL - Ecole Polytechnique Fédérale de Lausanne
2 IETR - Institut d'Électronique et des Technologies du numéRique
3 University of Zagreb

Fundamental limits for implanted antennas should be able to evaluate the bounds on losses with the knowledge of physical limitations from antenna and tissue parameters. In this work, rules of thumb to assess losses of deeply implanted antennas are presented toward improving the radiation efficiency. By means of rigorous and approximate approaches, the radiation efficiency of an elementary antenna within a spherical phantom is calculated as a function of multiple variables. According to the rules summarized subsequently, losses from different contributions may play a key role in specific situations, such as changes in the antenna type, phantom size, implant location and operating frequency.

Mots clés: fundamental limits; implanted antennas; radiation efficiency; losses

Domaines: Sciences de l'ingénieur [physics]

Mingxiang Gao, Denys Nikolayev, Marko Bosiljevac, Zvonimir Sipus, Anja K. Skrivervik. Rules of Thumb to Assess Losses of Implanted Antennas. 15th European Conference on Antennas and Propagation (EuCAP), Mar 2021, Dusseldorf, Germany. ⟨10.23919/EuCAP51087.2021.9411344⟩. ⟨hal-03330246⟩