Dual frequency reconfigurable reflectarray antenna of split ring elements with RF MEMS switches

Güçlü, Caner
Dual band (K and Ka) electronically scanning reflectarray with RF MEMS switches is designed, implemented and measured. Unit cell of the reflect array is composed of conductor backed split-ring elements. In order to steer the beam, the phase of the incident circularly polarized wave is controlled by RF MEMS switches that modify the angular orientation of split-rings individually. Reflectarray is designed using unit cell approach with periodic boundary conditions. The antenna is fabricated by using surface micromachining process developed in METU MEMS Center. Radiation patterns of the antenna are measured and compared with the simulations. It has been shown that the reflectarray is capable of beam switching to 35° in Ka band, 24° in K band.


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Citation Formats
C. Güçlü, “Dual frequency reconfigurable reflectarray antenna of split ring elements with RF MEMS switches,” M.S. - Master of Science, Middle East Technical University, 2010.