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.

Tunable Fabry-Perot cavity THz antenna based on leaky-wave propagation in nematic liquid crystals / Fuscaldo, Walter; Tofani, Silvia; Zografopoulos, Dimitrios C.; Baccarelli, Paolo; Burghignoli, Paolo; Beccherelli, Romeo; Galli, Alessandro. - In: IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS. - ISSN 1536-1225. - 16:(2017), pp. 2046-2049. [10.1109/LAWP.2017.2695324]

Tunable Fabry-Perot cavity THz antenna based on leaky-wave propagation in nematic liquid crystals

Fuscaldo, Walter
;
Tofani, Silvia;Burghignoli, Paolo;Galli, Alessandro
2017

Abstract

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.
2017
leaky waves; leaky-wave antennas (LWAs); liquid crystals (LCs); terahertz (THz); tunable devices
01 Pubblicazione su rivista::01a Articolo in rivista
Tunable Fabry-Perot cavity THz antenna based on leaky-wave propagation in nematic liquid crystals / Fuscaldo, Walter; Tofani, Silvia; Zografopoulos, Dimitrios C.; Baccarelli, Paolo; Burghignoli, Paolo; Beccherelli, Romeo; Galli, Alessandro. - In: IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS. - ISSN 1536-1225. - 16:(2017), pp. 2046-2049. [10.1109/LAWP.2017.2695324]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1015032
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