Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. AssemblyLineCompatible Electromagnetic Characterization of Antenna Substrates for Wearable Applications using Polynomial Chaos
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Deckmyn, T.; Rossi, M.; Agneessens, S.; Rogier, H.; Ginste, D.V.  Institute of Electrical and Electronics Engineers IEEE; IEEE Microwave Theory and Techniques Society: IEEE MTTS International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization, NEMO 2018 : 810 August 2018, Reykjavik, Iceland Piscataway, NJ: IEEE, 2018 ISBN: 9781538652046 ISBN: 9781538652039 ISBN: 9781538652053 S.242245 
 International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) <5, 2018, Reykjavik> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer IZM () 
Abstract
For the design and production of reliable devices applied in wearable components, characterization of the electromagnetic properties of materials is of paramount importance. Therefore, we propose a novel approach, based on a resonanceperturbation method, which compares simulations and performed measurements. An insetfed patch antenna with a resonance frequency in the vicinity of the 2.45GHz Industrial, Scientific, and Medical band enables us to quickly estimate the characteristics of a given material sample. In a first step, the two frequencies for which the simulated return loss of the fixture crosses a defined threshold are modeled as polynomial functions of the relative permittivity and loss tangent of the material under test. Then, the electromagnetic properties of the material are obtained by comparing the modeled and measured frequencies. The electromagnetic properties of several textile materials of interest are determined with this method. It is shown that the proposed technique is fast, precise, and nondestructive. Owing to this, it is suitable for integration into an assembly line, where substrate samples are straightforwardly characterized before being used for the manufacturing of actual antennas.