Title :
MEMS-reconfigurable antenna based on a multi-size pixelled geometry
Author :
Rodrigo, D. ; Damgaci, Y. ; Biyikli, N. ; Cetiner, B.A. ; Romeu, J. ; Jofre, L.
Author_Institution :
Signal Theor. & Commun. Dept., Univ. Politec. de Catalunya, Barcelona, Spain
Abstract :
A MEMS reconfigurable antenna with beam steering capability and resonance frequency reconfigurability is presented. The design is based in an interconnected patch grid structure and employs a hybrid geometry with different sized patches in a biclustered distribution on order to reduce the structure complexity and the number of necessary switches. A small antenna of λ/2 by λ/2 using only 12 RF-MEMS switches is optimized using genetic algorithms, demonstrating beam tilting over a range of 120° and resonant frequency reconfigurability over 4, 5 and 6 GHz. The described design constitutes a step forward in the accomplishment of multiple parameter reconfiguration.
Keywords :
beam steering; genetic algorithms; microstrip antennas; microswitches; MEMS-reconflgurable antenna; RF-MEMS switches; beam steering; beam tilting; biclustered distribution; frequency 4 GHz; frequency 5 GHz; frequency 6 GHz; genetic algorithms; hybrid geometry; interconnected patch grid structure; multisize pixelled geometry; resonance frequency; structure complexity; Antenna radiation patterns; Antenna theory; Beam steering; Current distribution; Geometry; Impedance; Micromechanical devices; Resonance; Resonant frequency; Switches;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
