Wideband unit-cell based on liquid crystals for reconfigurable reflectarray antennas in f-band

Author

Perez-Palomino, G. ; Encinar, J.A. ; Barba, M. ; Dickie, R. ; Baine, P. ; Cahill, R. ; Florencio, R. ; Boix, R.R.

Author_Institution

Dept. of Electromagn. & Circuit Theor., Univ. Politec. de Madrid, Madrid, Spain

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

A reconfigurable reflectarray-cell has been designed to provide a large tunable phase range in the frequency band 117-130 GHz. The unit-cell comprises three parallel dipoles printed on a quartz-wafer and a tunable liquid crystal (LC) placed on a cavity between the dipoles and a ground plane. The simulation results show a tunable phase-shift in a range larger than 300 degree for a 10% bandwidth and low sensitivity to the angle of incidence.

Keywords

broadband antennas; dipole antennas; liquid crystals; millimetre wave antenna arrays; reflectarray antennas; F-band; frequency 117 GHz to 130 GHz; ground plane; parallel dipoles; quartz-wafer; reconfigurable reflectarray antennas; reconfigurable reflectarray-cell; tunable liquid crystal; tunable phase-shift; wideband unit-cell; Bandwidth; Cavity resonators; Educational institutions; Erbium; Liquid crystals; Loss measurement; Reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6347987

Filename

6347987