Research Article
Miniature Antenna Enabling Near-field Eye-to-eye Communication in the MICS Band
@INPROCEEDINGS{10.4108/icst.bodynets.2013.253508, author={Christoph Beck and J\o{}rg Nagel and Christian Rusch and Georg Bretthauer}, title={Miniature Antenna Enabling Near-field Eye-to-eye Communication in the MICS Band}, proceedings={8th International Conference on Body Area Networks}, publisher={ICST}, proceedings_a={BODYNETS}, year={2013}, month={10}, keywords={artificial accommodation system eye-to-eye communication near-field antenna design planar loop mics medradio}, doi={10.4108/icst.bodynets.2013.253508} }- Christoph Beck
Jörg Nagel
Christian Rusch
Georg Bretthauer
Year: 2013
Miniature Antenna Enabling Near-field Eye-to-eye Communication in the MICS Band
BODYNETS
ACM
DOI: 10.4108/icst.bodynets.2013.253508
Abstract
The Articial Accommodation System (AAS) is a set of two tiny active medical implants meant to replace and imitate the natural eye lenses in case of cataract or presbyopia. The implants require a continuous exchange of sensor data between both eyes to determine the object distance. In this paper we present the design and characterization of a compact, differentially fed, multi-turn loop antenna for a near-field eye-to-eye communication link at 402-405 MHz (MICS). The bare antennas have a volume of just 1.1mm^3 and exhibit a bandwidth of 5.6%. The efficiency of the link was evaluated by 4-port measurements using a customized head phantom. The measured power transfer efficiency of -60.5dB suggests the wireless link to be reliable and energy-efficient.