Novel Wideband Metallic Patch Antennas with Low Profile

Table 1

Antenna dimensions, bandwidths, and average gains of antennas.

Antenna	Cell size; ××  (mm)	Slot size; × (mm)	Stub length; (mm)	Impedance bandwidth	Average gain (dBi)
I	13.3 × 13.3 × 1	33 × 2	10	22.1%	11.4
II	12.1 × 12.1 × 0.5	30 × 2	10	29.9%	10.6
III	12.1 × 56 × 0.5	32 × 2	10	32.1%	10.9