Development of reconfigurable liquid crystal metasurface reflector based on TFT-LCD technology

Mitsutaka Okita; Daiichi Suzuki; Kazuki Matsunaga; Shinichiro Oka; Hiromi Matsuno; Takuya Ohto

doi:10.1117/12.2649417

14 March 2023 Development of reconfigurable liquid crystal metasurface reflector based on TFT-LCD technology

Mitsutaka Okita, Daiichi Suzuki, Kazuki Matsunaga, Shinichiro Oka, Hiromi Matsuno, Takuya Ohto

Proceedings Volume 12442, Emerging Liquid Crystal Technologies XVIII; 1244205 (2023) https://doi.org/10.1117/12.2649417
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

For next-generation mobile communications, the application of millimeter wave bands is being explored for high-speed and large-capacity communications. However, coverage holes occur because millimeter waves are found to be blocked by objects. To overcome this problem of coverage holes, we have developed a reconfigurable liquid crystal metasurface reflector by applying thin film transistor liquid crystal display technology. The developed reconfigurable liquid crystal metasurface reflector was designed to operate at 28 GHz, and the measurement findings confirmed that the reflection phase control range was 260° and exhibited equivalent reflection characteristics for both vertical and horizontal polarization. Furthermore, the reflection direction control function was confirmed by varying the reflection direction between 0° and 60° with several phase distributions.

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Citation Download Citation

Mitsutaka Okita, Daiichi Suzuki, Kazuki Matsunaga, Shinichiro Oka, Hiromi Matsuno, and Takuya Ohto "Development of reconfigurable liquid crystal metasurface reflector based on TFT-LCD technology", Proc. SPIE 12442, Emerging Liquid Crystal Technologies XVIII, 1244205 (14 March 2023); https://doi.org/10.1117/12.2649417

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