Composite GPS Patch Antenna for the AR Bandwidth Enhancement

Table 1

The measured gain and AR of the composite FR-4 patch antenna and ceramic antenna.

Freq. (GHz)	AR (dB)	RHCP	LHCP
		Gpeak (dBi)	Gpeak (dBi)
Composite FR-4 patch antenna
1.56	2.67	2.29	−5.93
1.565	2.65	2.58	−5.51
1.57	2.61	2.63	−6.21
1.575	2.57	2.75	−6.29
1.58	2.56	2.21	−8.06
1.59	2.65	1.62	−9.07
1.60	2.76	1.52	−9.81
1.61	2.81	1.41	−12.33
1.62	2.84	1.36	−12.15
Composite ceramic patch antenna
1.56	1.42	2.28	−6.01
1.565	1.32	2.71	−6.04
1.57	1.35	2.67	−6.21
1.575	1.24	2.65	−6.47
1.58	1.51	2.20	−8.88
1.59	1.54	2.15	−9.15
1.60	1.52	1.66	−9.70
1.61	1.74	1.51	−11.47
1.62	1.98	1.47	−8.15