Temperature investigations of liquid crystal based reconfigurable reflectarrays

Author

Bildik, Saygin ; Karabey, Onur Hamza ; Fritzsch, Carsten ; Jakoby, Rolf

Author_Institution

Inst. for Microwave Eng. & Photonics, Tech. Univ. Darmstadt, Darmstadt, Germany

fYear

2012

fDate

25-28 June 2012

Firstpage

1

Lastpage

4

Abstract

The effects of temperature variations on liquid crystal based reconfigurable reflectarrays are investigated. A Ka-band reconfigurable reflectarray that is made of microstrip patch elements has been used for this purpose. Measured far-field patterns and gain of the reflectarray antenna are presented at different temperatures at 36 GHz. Beam steering time measurements are also carried out at different temperatures, i.e., between 15 °C and 35 °C, for the 0° to -20° beam steering case.

Keywords

antenna radiation patterns; beam steering; liquid crystal devices; microstrip antenna arrays; millimetre wave antenna arrays; reflectarray antennas; time measurement; Ka-band reconfigurable reflectarray; beam steering time measurements; far-field patterns; frequency 27 GHz to 40 GHz; liquid crystal; microstrip patch elements; reflectarray antenna gain; temperature variations; Antennas; Dielectric measurements; Dielectrics; Liquids;

fLanguage

English

Publisher

ieee

Conference_Titel

Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on

Conference_Location

Toulouse

Print_ISBN

978-1-4673-0290-6

Type

conf

DOI

10.1109/ANTEM.2012.6262353

Filename

6262353