Designing a phase manipulator using metamaterials based on paired planar spirals

A metamaterial consisting of paired planar spirals has been simulated for phase manipulation of electromagnetic waves in the microwave range. The optimal geometric parameters of the metamaterial and the phase values at the resonators were obtained to control the radiation pattern. It was proposed to realize the phase change of the wave emitted by a planar spiral element by changing the capacitance of the varicap when the voltage on it changes.