Metasurface

To overcome the limitations of coverage/structure/function of existing Terahertz antenna systems for the world's first commercialization of 6G technology expected around 2028-2030 after 5G, intelligent antenna systems that achieve terahertz broadband (>20GHz) / ultra-high gain (>36 dBi) / wide-angle coverage (>150°) / high efficiency (>40%) antenna performance are to be developed.

FR4-based metasurface operating at mmWave 5G is designed for reliable beam steering. By considering phase variation only one dimension and spatially modulating certain unit cells arrangement, the metasurface can achieve beam steering along the one-axis.

This metasurface confirms that high gain according to the polarization of the incident waves on the metasurface, supporting polarization-dependent beam-shaping capability as a function of the polarization of incident waves.

We develop display-integrated 5G mmWave antenna. Unlike precedent studies, antenna is directly integrated with and tightly coupled to the metallic display panel. By doing so, it is expected that display visibility and touch sensor sensitivity will be greatly improved along with achieving high radiation efficiency.

We developed a novel design of multi-functional and multi-band active metasurface employing liquid crystal whose permittivity can be changed according to the DC bias voltage. This active metasurface enables transforming arbitrary electromagnetic wavefront into the desired form without a phase shifter which is a cost-consuming and high heat-emitting RF component.