reflectarray request pls?

hi all,i look for any paper or design and theory of reflectarry under ebg like mushroom,any buddy help me,thanks in advance

hi abdoeng,
i've no idea about the figure u showed me last time, and i also asked my collegue for help but in vain. Most work they concern is on the surface impedance, bandgap design, etc.
So sry for that!

hi.drukbear,i don't get u,what last figure i have?,what is ur exact request,here i ask about reflectarray
regards

a curve showing phase-frequency relation

drunkbear,what is ur request about phase-frequency relation?

how about the theis of Sievenpiper?