Multifunctional Reflectionless Metasurfaces

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.advisor Asadchy, Viktar Elsakka, Amr 2016-05-12T10:39:40Z 2016-05-12T10:39:40Z 2016-05-09
dc.description.abstract Engineering reflection and transmission of electromagnetic waves is very important in a wide range of applications; that is why there is always a continuous need for new solutions that are more efficient and flexible. Here, design and realization of a single-layer meta-transmitarray (metasurface) which provides a certain functionality in a narrow frequency band while remains reflectionless (transparent) outside of the operational frequency band is presented. Metasurfaces are structures that represent composites comprising two-dimensional arrays of electrically small elements that are electrically and magnetically polarizable. Realizing such transmitarrays would allow integrating several metasurfaces in composite structures that perform different functionalities at different frequencies, opening a door for various new applications. This Master's thesis provides a theoretical analysis for possible alternative ways to realize such a metasurface. Two designs for metasurfaces that demonstrate abilities for wavefront shaping and anomalous refraction are introduced here as well. Numerical simulations for the two proposed designs as well as testing one of them experimentally are also presented. Moreover, a promising approach to design multifunctional cascaded metasurfaces that provide different operations at different frequencies is proposed and numerically tested. en
dc.format.extent 36+7
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.title Multifunctional Reflectionless Metasurfaces en
dc.type G2 Pro gradu, diplomityö fi Sähkötekniikan korkeakoulu fi
dc.subject.keyword metasurface en
dc.subject.keyword multifunctional en
dc.subject.keyword reflectionless en
dc.subject.keyword transmitarray en
dc.identifier.urn URN:NBN:fi:aalto-201605122002
dc.programme.major Radio Science and Engineering fi
dc.programme.mcode S3012 fi
dc.type.ontasot Master's thesis en
dc.type.ontasot Diplomityö fi
dc.contributor.supervisor Tretiakov, Sergei
dc.programme EST - Master’s Programme in Radio Science and Engineering (TS2005) fi
dc.location P1 fi

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