Tunable Fabry-Perot Cavity THz Antenna Based on Leaky-Wave Propagation in Nematic Liquid Crystals

被引：22
|
作者：
Fuscaldo, Walter [1 ]
Tofani, Silvia [1 ,2 ]
Zografopoulos, Dimitrios C. [2 ]
Baccarelli, Paolo [1 ]
Burghignoli, Paolo [1 ]
Beccherelli, Romeo [2 ]
Galli, Alessandro [1 ]
机构：
[1] Sapienza Univ Rome, Dept Informat Engn Elect & Telecommun, I-00184 Rome, Italy
[2] CNR, Ist Microelettron & Microsistemi, I-00133 Rome, Italy
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2017年 / 16卷
关键词：
Leaky waves; leaky-wave antennas (LWAs); liquid crystals (LCs); terahertz (THz); tunable devices;
D O I：
10.1109/LAWP.2017.2695324
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：
A novel terahertz (THz) Fabry-Perot cavity (FPC) antenna is proposed, based on a multistack of alternating layers of highly birefringent nematic liquid crystal (NLC) and highpermittivity dielectric, which comprehensively acts as a Bragg reflector. This layout is able to provide enhanced reconfigurability and improved directivity with respect to standard FPC leaky-wave antenna (LWA) designs. The application of a low driving voltage to the NLC layers allows for the dynamic control of the radiating properties of the LWA, at a fixed frequency in the low-THz range. The attractive features and performance of two different configurations are rigorously discussed in a theoretical context, taking into account the realistic implementation of the proposed device.
引用
收藏
页码：2046 / 2049
页数：4
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