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

页码：2046 / 2049

页数：4

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