Resumen
Unitary element of double band and circular polarization can be used as a unit element of an antenna array system, an adaptive antenna array system, or as a compact feeder for reflecting antenna systems. This element, with a multilayer design with liquid crystal, is capable of changing its response in the necessary phase for adaptive antennas. The structure of the element allows to feed it with two orthogonal field vectors through circular grooves allowing to obtain the circular polarizations to the right and to the left, and a double band response. This means a single opening for both polarizations and bands. The element changes its phase thanks to the liquid crystal layer by applying a voltage difference that changes the orientation of the liquid crystal particles and therefore their relative dielectric constant. (Machine-translation by Google Translate, not legally binding)