Title :
77 GHz Reconfigurable Reflectarray with Nematic Liquid Crystal
Author :
Marin, Raul ; Moessinger, A. ; Goelden, Felix ; Mueller, Steffen ; Jakoby, Rolf
Author_Institution :
Darmstadt Univ. of Technol., Darmstadt
Abstract :
A 77 GHz liquid crystal microstrip reflectarray with beam reconfiguration capability in one dimension is presented. The free-standing reflector (without feed) has been characterized with respect to its reflection phase and magnitude. While it is possible to tune the reflection phase through almost 300deg, the associated reflection losses are still quite high. Nevertheless the pattern measurements of the reflectarray showed distinct beam collimation towards different angles when appropriate DC control voltages are applied.
Keywords :
antenna radiation patterns; liquid crystal devices; microstrip antenna arrays; millimetre wave antenna arrays; nematic liquid crystals; reflector antennas; beam collimation; beam reconfiguration capability; free-standing reflector; frequency 77 GHz; liquid crystal microstrip reflectarray; nematic liquid crystal; pattern measurement; reconfigurable reflectarray; reflection losses; reflection phase; beam reconfiguration; liquid crystal; reflectarray;
Conference_Titel :
Antennas and Propagation, 2007. EuCAP 2007. The Second European Conference on
Conference_Location :
Edinburgh
Print_ISBN :
978-0-86341-842-6
