Flexible, Polarization-Diverse UWB Antennas for Implantable Neural Recording Systems

IEEE Transactions on Biomedical Circuits and Systems
Hadi BahramiBenoit Gosselin

Abstract

Implanted antennas for implant-to-air data communications must be composed of material compatible with biological tissues. We design single and dual-polarization antennas for wireless ultra-wideband neural recording systems using an inhomogeneous multi-layer model of the human head. Antennas made from flexible materials are more easily adapted to implantation; we investigate both flexible and rigid materials and examine performance trade-offs. The proposed antennas are designed to operate in a frequency range of 2-11 GHz (having S11 below -10 dB) covering both the 2.45 GHz (ISM) band and the 3.1-10.6 GHz UWB band. Measurements confirm simulation results showing flexible antennas have little performance degradation due to bending effects (in terms of impedance matching). Our miniaturized flexible antennas are 12 mm×12 mm and 10 mm×9 mm for single- and dual-polarizations, respectively. Finally, a comparison is made of four implantable antennas covering the 2-11 GHz range: 1) rigid, single polarization, 2) rigid, dual polarization, 3) flexible, single polarization and 4) flexible, dual polarization. In all cases a rigid antenna is used outside the body, with an appropriate polarization. Several advantages were confirmed for dual p...Continue Reading

References

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Dec 14, 2011·Sensors·Benoit Gosselin
Feb 1, 2013·Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society·Hadi BahramiLeslie A Rusch
Dec 1, 2010·IEEE Transactions on Biomedical Circuits and Systems·Eric Y ChowPedro P Irazoqui
Jun 1, 2009·IEEE Transactions on Biomedical Circuits and Systems·B GosselinD Guitton
Jul 24, 2014·IEEE Transactions on Bio-medical Engineering·Hadi BahramiBenoit Gosselin

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Citations

Apr 5, 2017·Sensors·David RotermundKlaus Richard Pawelzik
Jan 28, 2017·IEEE Transactions on Biomedical Circuits and Systems·Hang WongEric Arnaud
Aug 24, 2021·Bioelectromagnetics·John Blauert, Asimina Kiourti

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