Capacitance value control for metamaterial reflectarray using multi layer mushroom-structure with parasitic element

This paper proposes novel reflectarray design using multi layer mushroom structure with parasitic element based on capacitance value control of LC resonant circuit model. From the study of LC resonant circuit model, this paper shows the parallel setting capacitance value can be theoretically controlled by that the parasitic layer number. Next, this paper shows novel reflectarray design method for -70 degree vertical beam control mushroom reflectarray for vertical polarization by focusing on capacitance value. Finally, this paper shows proposed design has good performance and both simulated and experiment results shows good agreement.