Microstrip Patch Antenna Bandwidth Enhancement Using AMC/EBG Structures

Table 1

Comparison between the three designs.

Prototype	Bandwidth (MHz)	Directivity (dB)		Gain (dB)		Radiation efficiency (%)
	Meas.	Meas.	Sim.	Meas.	Sim.	Meas.	Sim.
Patch antenna	23 (0.93%)	7.33	5.95	4.59	4.29	53.21	68.23
Patch antenna-EBG	34 (1.37%)	7.50	6.84	4.61	5.56	51.40	74.47
Patch antenna-AMC	46 (1.90%)	6.72	8.52	0	0.79	21.28	16.86