Miniaturized C-EBG power/ground planes on substrate integrated artificial dielectric with stopband enhancement

A miniaturized C-EBG power/ground planes on the substrate integrated artificial dielectric (SIAD) with stopband enhancement is studied in this paper. Since the SIAD is also an EBG structure, the additional stopband of the SIAD can be effectively used to broaden the stopband bandwidth of C-EBG. The simulation results show that the stopband bandwidth is enhanced 65% as well as reducing the C-EBG unit cell size by 55% without deteriorating the lower bound cutoff frequency in the sub GHz region of the original C-EBG.