High-efficiency Receiver-Transmitter Metasurfaces with Independent Control of Polarization, Amplitude and Phase

Polarization, amplitude and phase are three critical characteristics of electromagnetic waves as known. In this article, a general method with high efficiency and low complexity is proposed to realize simultaneously independent control of polarization, amplitude and phase of electromagnetic waves by receiver-transmitter integrated meta-atoms in transmissive geometry. The amplitude modulation is controlled by the rotation angle of top receiver patch, while the phase delay is determined by the rotation angle of bottom transmitter patch without affecting the amplitude. In addition, the polarization is controlled by the polarization of both receiver and transmitter. As a proof of concept, a metasurface with multiple diffraction orders is designed, fabricated and measured in microwave reigonnnogier. The measured results are in excellent agreement with the simulated ones. Our finding offers an alternative way to synthesize arbitrary wavefront shapes of EM waves, and we are looking forward to more highperformance photonic metadevices by applying this approach.