Title :
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
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;
Conference_Titel :
Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on
Conference_Location :
Toulouse
Print_ISBN :
978-1-4673-0290-6
DOI :
10.1109/ANTEM.2012.6262353
