Liquid-Crystal-Based Beam-Steering Guided-Wave Metasurface Antenna at Millimeter-Wave Band

被引：0

作者：

Park, Jinki ^{[1
]}

Yoo, Youngin ^{[1
]}

Lee, Changjae ^{[2
]}

Yoon, Dong Ki ^{[2
]}

Park, Seong-Ook ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol KAIST, Sch Elect Engn, Daejeon 34141, South Korea

[2] Korea Adv Inst Sci & Technol KAIST, Dept Chem, Daejeon 34141, South Korea

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2024年 / 23卷 / 12期

关键词：

beam steering; liquid crystal (LC); Antenna array; metasurface; millimeter-wave (mmWave); PATCH ANTENNA; PRETILT ANGLE; MODEL;

D O I：

10.1109/LAWP.2024.3439587

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, we present the design and fabrication of a liquid crystal (LC)-based metasurface antenna for millimeter-wave beam-steering applications. Unlike the conventional beamforming systems that rely on phase shifters, our approach harnesses the electrical tunability of LCs. We target a frequency of 34.5 GHz, taking advantage of the pronounced low dielectric loss characteristics exhibited by LCs. The proposed antenna uses a substrate-integrated waveguide (SIW) to feed millimeter-wave to metasurface unit cells, and each cell's radiation is controlled through dc voltage biasing of the. The measurement results demonstrate a beam-steering range of 120 degrees with a maximum gain of 10.754 dBi and a sidelobe level (SLL) of -11.562 dBc at the boresight.

引用

页码：4208 / 4212

页数：5

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