Passive and active reconfigurable resonant metamaterial cavity for beam deflection

The modeling and characterization of an optimized resonant cavity for a passive reconfigurable directive beam antenna near 10 GHz has been presented. It is based on a variable phase metamaterial made of an inductive and a capacitive grid where there is a regular increase of the gap spacing. This variable phase metamaterial allows us to have a forward and backward deflection of up to 30deg. An electronically tunable phase PRS has also been proposed where varicap diodes are implemented in order to achieve shifts in the reflection coefficient phase response. This active PRS has been also employed in a resonant cavity where a shift in the resonance frequency and the reflection coefficient amplitude of the cavity has been observed according to the bias voltage applied. Additional work is required to further investigate the effect of the active PRS on the beam deflection of the antenna cavity.