Title :
Dual-band orthogonally-polarized slotted-Lozenge reflective unit cell tuned by MEMS varactor
Author :
Oloumi, Daniel ; Moghadas, Hamid ; Mousavi, Pedram
Author_Institution :
ECE, Univ. of Alberta, Edmonton, AB, Canada
Abstract :
A novel dual-band orthogonally-polarized MEMS reconfigurable slotted-Lozenge patch is introduced here. The dual-band performance of the lozenge patch (12 and 14 GHz) is due to different diagonal length. A cross slot is etched in the middle of patch to control the phase swing in each frequency and polarization. The effective slot length is controlled by MEMS capacitors with capacitance ratio of 1.5 resulting in phase swing of 345°. The reflect-array composed of this cell element would be able to radiate two independent beams at different frequencies and polarizations.
Keywords :
antenna radiation patterns; micromechanical devices; microstrip antenna arrays; multifrequency antennas; reflectarray antennas; varactors; MEMS capacitors; MEMS reconfigurable slotted-Lozenge patch; MEMS varactor; beams; diagonal length; dual-band orthogonally-polarized slotted-Lozenge reflective unit cell; frequency 12 GHz; frequency 14 GHz; phase swing; reflect-array; Capacitance; Dual band; Frequency control; Micromechanical devices; Reflector antennas; Varactors;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348727
