Investigate the features of the tunable frequency selective surface

Abstract

A novel tunable bandpass frequency selective surface is designed, implemented and tested in this project. The metasurface is not only able to accurately select the desired terahertz frequency but also able to perfectly tune the center frequency when excited by the light beam. The special feature of this metasurface is implemented by using an array of small three-layer square shape structure, which is uniquely designed, and has a wide range of application future due to its specialty in frequency tuning. The product has been tested with satisfactory feature and the ICA (independent component analysis), an algorithm widely used in machine learning, face reorganization, voice separation and signal cleaning was attempted to apply to the scanning result of the test sample to automatically separate various frequency levels and reconstruct the image by combining the most important information scattered at different frequencies.