Metamaterial with integrates energy harvesting functionality for high frequencies

This work was aimed to design a metamaterial energy harvester with integrated energy harvesting and rectifying functionality. The harvester was based on split ring resonator principle. After the harvester was developed, it was tested experimentally in various positions and distances inside the anechoic chamber. To evaluate the experimental data, a new method was adopted – the ratio between the harvester generated voltage and power density. The best result was shown in single harvester using HE polarization 41,8 V∙m¬2/W, and the best result of 103 V∙m¬2/W was demonstrated for harvester 3 x 1 array when the harvesters were placed one after another. The second energy harvester was designed to achieve a better impedance matching. It was tested by connecting harvester to the microwave generator. The highest achieved efficiency coefficient was 21 % at 5 dBm power level