Development of metasurface antennas

For better wireless communication environment in the 5G and 6G era

Prototyping metasurface anntenas for millimeter wave directional control

Nissha is prototyping passive reflectarray and transmitarray metasurface antennas at 28GHz and 77GHz under the academic guidance of Professor Sungtek Kahng at Incheon National University in Republic of Korea, and exploring the possibility of using its high volume R2R manufacturing capability in the future.

Basic functions

Metasurface anntenas reflect or focus the incident millimeter wave in the target direction to improve wireless connection.

Features

Passive antenna

The passive metasurface doesn’t need a power source. This mimimizes the restrictions on the installation place.

Variations of angle

The reflection angle can be adjusted by changing the pattern.

Large-area substrate

Multiple metasurfaces for each angle of reflection can be fabricated on a single large-area substrate with high accuracy of layout.

Prototype evaluation results

We prepare several combinations of low Dk/Df flexible substrates and adhesives to create prototypes of reflectarray and transmitarray metasurface antennas. Then, we evaluate the angular distribution of reflected and transmitted radiant power at 28GHz.

The angular distribution of radiant power of the incidecnt wave from a single patch antenna and the reflected wave from three different reflectarray anntenas. Peaks are observed at 20°, 30° and 45°, respectively.

The angular distribution of radiatn power of the incidecnt wave from a single patch antenna and the transmitted wave from the transmitarray antenna. A peak is observed at 0°.

Nissha Core Technologies utilized for these prototypes