Minimized Low-Profile Wideband Antennas Using High Impedance Surface

Table 1

Parameter study of HIS unit cell.

HIS; (unit: mm)	Bandgap; ()	Bandwidth	Resonant frequency
w = 70, g = 10, h = 30	(0.56–0.83) GHz	39%	0.68 GHz
w = 60, ,	(0.59–0.92) GHz	44%	0.74 GHz
w = 80, ,	(0.52–0.75) GHz	36%	0.625 GHz
, g = 6,	(0.50–0.72) GHz	36%	0.6 GHz
, g = 13,	(0.58–0.88) GHz	41%	0.715 GHz
, , h = 20	(0.71–0.97) GHz	31%	0.83 GHz
, , h = 40	(0.45–0.71) GHz	45%	0.57 GHz