Multi-band metasurface design for seamless communication and sensing enhancement

With the rapid development of the Internet of Things and wireless technology, more and more intelligent applications have emerged, covering various frequency bands, such as sub-6 GHz, satellite bands and millimeter wave bands. However, the quality of communication and perception has been affected by link attenuation due to non-line-of-sight environments and high frequency ranges. Recently, metasurfaces have emerged as a promising approach to enhance links. However, their focus is mainly on a single frequency band, limiting their potential in multi-band applications. This article introduces a multi-band programmable metasurface solution that effectively improves communication quality and perception performance due to its low cost, low power consumption and easy deployment. This work introduces meta-atoms with different size parameters into the meta-surface and optimizes the resonance characteristics between elements to achieve electromagnetic wave focusing in the 5.69–5.96 GHz, 11.25–20.86 GHz and 23.37–27.56 GHz frequency bands. The beamforming technology of the element surface significantly reduces clutter interference, improves the sensing and communication distance, and its encoding capability supports the pointing of multiple target locations. This metasurface offers promising applications in the fields of seamless wireless communication and sensing.