@inproceedings{f282df09776c4b8abf649be6c3e4f1a0,
title = "A Tunable Metamaterial Element Based on Liquid Crystals for Holographic Beam-Steering Antennas",
abstract = "This work presents an electronically reconfigurable metamaterial element based on liquid crystals operating in Ka- Band. The proposed metamaterial element features a continuously tunable transmission coefficient, which can be applied to control the magnitude of the local aperture field. As the electrodes are electrical isolated with each other, individual biasing is realized. The element size is relatively small compared with the wavelength, which provides a fine sampling of the reference wave. By allocating the metamaterial elements with specific biasing voltages, the desired aperture field and thus the directional beam can be formed. The proposed structure is easy to be integrated into common guiding wave structures. Measured results show that the resonant frequency continuously shifts from 28.5 GHz to 26.1 GHz when the addressing voltage varies from 2.5 V to 10 V. A fast response time of around 150 ms was achieved with a thin liquid crystal layer of around 11.2 um.",
keywords = "beam steering, holography, leaky-wave antenna, liquid crystals (LCs)",
author = "Wang, \{Peng Yuan\} and Andreas Rennings and Daniel Erni",
note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE MTT-S International Wireless Symposium, IWS 2023 ; Conference date: 14-05-2023 Through 17-05-2023",
year = "2023",
doi = "10.1109/IWS58240.2023.10222831",
language = "English",
series = "2023 IEEE MTT-S International Wireless Symposium, IWS 2023 - Proceedings",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2023 IEEE MTT-S International Wireless Symposium, IWS 2023 - Proceedings",
address = "United States",
}