Measurement of the Complex Permittivity of Phantoms for 5G/6G Compliance Tests

Sammanfattning: In late 2019, 5G, the next generation of networktechnology was first deployed. The first deployment covers onlya small part of the total data transfer needs. In order to increasedata transfer, the frequency band used, must be increasedtowards the millimeter wave.As the frequency band is increased, safety studies must be done.The amount of radiation put out by the new 5G technology mustadhere to certain standards.This paper was written in conjunction with a study madeby a group of students in KTH. The aim of the project, wasto determine the amount of radiation absorbed from the new5G technologies. Thereby also determining if the radiation ispermissible according to safety standards.The method by which the study achieves its aim is, by anapproach called ’heating kinetics’. Heating kinetics means that,the absorbed radiation in a sample (phantom), is determinedfrom its temperature increase.The group of students was divided into two sub-groups. Eachsub-group being assigned different parts of the project. Thispaper shows the work of one of the sub-groups.The work involves determining material properties of theradiated sample (phantom) through simulation and experimentalmeasurements. The result is a complex permittivity. The conclusionof the study is that the method is a valid way of obtainingmaterial properties.