Axial Ratio-Tuned Circularly Polarized Square Patch Antenna with Long Stubs

Table 2

Optimal design parameters and performance of the CP antenna with different stub widths.

						dB	AR < 3 dB
1.5	15.6	1.7	10.8	11.5	10.7	2.286~2.304	2.267~2.310
2.5	15.6	1.7	11.6	11.5	10.7	2.297~2.314	2.284~2.328
3.5	15.6	1.1	11.6	11.5	10.7	2.287~2.304	2.277~2.326
4.5	15.6	0.6	11.6	11.5	10.7	2.312~2.328	2.295~2.342
5.5	15.6	0	11.6	12.5	11.5	2.272~2.293	2.250~2.311
6.5	15.6	0	12.9	12.5	11.2	2.405~2.429	2.412~2.460