Conclusion and Outlook
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Voltage tunable metamaterials for microwave frequencies have been investigated, designed, and manufactured within this work. The concept of metamaterials, where the electromagnetic response of sub-wavelength unit cells, which are arranged in periodic lattices, is described by effective material parameters, has been applied to design different planar and three-dimensional unit cell configurations considering their realizability and technological constraints. Based on the presented approaches, metamaterials with independently voltage tunable electric and magnetic properties can be designed.