Memorias de investigación
Communications at congresses:
Design and Evaluation of Liquid Crystal-Based Pixels for Millimeter and Sub-Millimeter Electrically Addressable Spatial Wave Modulators
Year:2019

Research Areas
  • Electronic technology and of the communications

Information
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 or full antennas 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. 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
International
Si
Congress
INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA)
960
Place
Granada, España
Reviewers
Si
ISBN/ISSN
978-1-7281-0563-5
10.1109/ICEAA.2019.8879268
Start Date
09/09/2019
End Date
13/09/2019
From page
787
To page
787
PROCEEDINGS OF THE 2019 INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA)
Participants

Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Electromagnetismo Aplicado
  • Departamento: Señales, Sistemas y Radiocomunicaciones
  • Departamento: Tecnología Fotónica y Bioingeniería
  • Centro o Instituto I+D+i: Centro de I+d+i en Procesado de la Información y Telecomunicaciones