Title :
Orthogonally-polarized dual-band MEMS-tunable double-slotted unit cell for reflectarray applications
Author :
Moghadas, Hamid ; Daneshmand, Mojgan ; Mousavi, Pedram ; Chaharmir, M. Reza ; Shaker, Jafar
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB, Canada
Abstract :
This paper presents a single-layer MEMS-reconfigurable reflective unit cell that supports two bands (12 and 14 GHz) at two orthogonal polarizations. A pair of MEMS varactors is used for continuous and independent tuning of each band. The dynamic phase range of 310 degree is obtained with a maximum loss of 0.23 dB. The resultant reflectarray can have a separate scanned beam of given polarization at each of its two operating frequency bands. This unit cell has the requirements of Cognitive Radio and Satellite two-way communication.
Keywords :
cognitive radio; micromechanical devices; multifrequency antennas; reflectarray antennas; satellite communication; varactors; MEMS varactors; cognitive radio; dynamic phase range; frequency 12 GHz; frequency 14 GHz; loss 0.23 dB; orthogonal polarizations; orthogonally-polarized dual-band MEMS-tunable double-slotted unit cell; reflectarray application; satellite two-way communication; single-layer MEMS-reconfigurable reflective unit cell; Antennas; Cognitive radio; Dual band; Micromechanical devices; Reflection; 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.2012.6347988
