Design and evaluation of liquid crystal-based pixels for millimeter and sub-millimeter electrically addressable spatial wave modulators

Pérez Palomino, Gerardo and Carrasco Yépez, Eduardo and Caño García, Manuel and Hervás García, Ricardo and Quintana Arregui, Xabier and Geday, Morten Andreas (2019). Design and evaluation of liquid crystal-based pixels for millimeter and sub-millimeter electrically addressable spatial wave modulators. In: "2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)", 09/09/2019 - 13/09/2019, Granada, España. ISBN 978-1-7281-0563-5. p. 1. https://doi.org/10.1109/ICEAA.2019.8879268.

Description

Title: Design and evaluation of liquid crystal-based pixels for millimeter and sub-millimeter electrically addressable spatial wave modulators
Author/s:
  • Pérez Palomino, Gerardo
  • Carrasco Yépez, Eduardo
  • Caño García, Manuel
  • Hervás García, Ricardo
  • Quintana Arregui, Xabier
  • Geday, Morten Andreas
Item Type: Presentation at Congress or Conference (Article)
Event Title: 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
Event Dates: 09/09/2019 - 13/09/2019
Event Location: Granada, España
Title of Book: Proceedings of 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
Título de Revista/Publicación: PROCEEDINGS OF THE 2019 INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA)
Date: October 2019
ISBN: 978-1-7281-0563-5
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Señales, Sistemas y Radiocomunicaciones
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

During the last decades, the Liquid Crystal (LC) technology has been widely used in the near infrared and visible regions of spectrum to develop tunable devices such as displays or spatial light modulators (SLM), which is the term used in photonic to describe an aperture antenna fed by an external source in reflection or transmission mode, known as reflectarray (RA) and transmitarray (TA) in microwaves. However, the use of the LC to implement tunable devices for millimeter and sub-millimeter waves is very recent. In the particular case of RAs/TAs, some efforts have been made in the last recent years to develop LC-pixels [1]-[3] or full antennas [2]-[3] up to 100 GHz. The main difference between both an LC-pixel in these frequencies and that one developed to operate in photonic applications lies in the use of resonators, which must be included in the pixels (cells) to achieve the appropriate phase-shift (Fig 1). The use of resonators makes the performance of the cells completely different for the critical electrical parameters, which also depends on the particular characteristics of the LC mixture used (dielectric anisotropy and loss tangent) at the operating frequency.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2016-75103-C2-1-RUnspecifiedUnspecifiedSubsistemas avanzados de antenas múltiples para comunicaciones de banda ancha terrestres y por satélite
Universidad Politécnica de MadridUnspecifiedUnspecifiedUnspecifiedPrograma Propio de I+D+i

More information

Item ID: 63896
DC Identifier: https://oa.upm.es/63896/
OAI Identifier: oai:oa.upm.es:63896
DOI: 10.1109/ICEAA.2019.8879268
Official URL: https://ieeexplore.ieee.org/abstract/document/8879268
Deposited by: Memoria Investigacion
Deposited on: 20 Mar 2021 09:14
Last Modified: 20 Mar 2021 09:14
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