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Reconfigurable Beam-Steerable Leaky-Wave Antenna Loaded with Metamaterial Apertures using Liquid Crystal-based Delay Lines

journal contribution
posted on 27.07.2022, 16:11 authored by Elahehsadat Torabi, Danilo ErricoloDanilo Erricolo, Pai-Yen ChenPai-Yen Chen, Walter fuscaldo, Romeo Beccherelli
An original liquid crystal (LC)-based substrate integrated waveguide (SIW) leaky-wave antenna is proposed. Inside the SIW, there is an embedded stripline sandwiched between an LC pool and another dielectric slab. The antenna couples the guided quasi-TEM mode into free space through a periodic set of complementary electric inductive-capacitive (cELC) resonators. Simulation results show that the antenna performs fixed-frequency continuous beam steering of 52° from backward −28° to forward 24° at 25.85 GHz. This relatively wide beam scan angle is achieved by tuning the LC permittivity through an applied quasi-DC bias voltage to the stripline. Simulation results show that the antenna has high realized gain through the entire scanning range (less than 1 dB degradation), relatively wide bandwidth, and good tolerance to frequency drift and fabrication errors.

Funding

Real-time Reconfigurable Smart Metasurface Antennas for Autonomous Vehicles | Funder: King Abdullah Univ of Science & Tech | Grant ID: OSR-2019-CRG8-4056.2

History

Citation

Torabi, E., Erricolo, D., Chen, P. -Y., fuscaldo, W.Beccherelli, R. (2022). Reconfigurable Beam-Steerable Leaky-Wave Antenna Loaded with Metamaterial Apertures using Liquid Crystal-based Delay Lines. Optics Express, 30(16), 28966-28966. https://doi.org/10.1364/oe.464811

Publisher

Optica Publishing Group

Language

en

issn

1094-4087