The Direction Switching Control of Electromagnetic Waves Based on All-dielectric Metamaterials
Keywords:
All-dielectric metamaterials, beam shaping, dynamic switchingAbstract
Electromagnetic waves control is becoming more and more urgent for important applications in communication and military fields. Studies have shown that it is possible to achieve reflection and refraction control of electromagnetic waves by introducing phase gradient. Wavefront control of electromagnetic waves can be achieved with metamaterials devices. However, metamaterials devices have to be diversified and enhance their capabilities to catch up the rapidly expanding demand on dynamic control currently. In this paper, we design a dynamic-modulated all-dielectric microwave control device to reconstruct the phase profile by filling different dielectric constants of media into it. As a result, the deflection direction of the electromagnetic waves, including whether the deflection occurs or not, can be controlled by this device flexibly. The device with such dynamic modulation function has potential application in the design and development of other functional devices or system, such as switches, beam shaping and imaging systems.
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