Table 2.
Reflectance plot (S11), total bands, resonance frequency, VSWR, and bandwidth data representation for the proposed four antenna structures using a substrate of Rogers RT Duroid 5880.
| Design | No of Bands | Reflectance Response (S11) | Resonance Frequency (GHz) | VSWR | Bandwidth (GHz) | Starting Point (GHz) | Ending Point (GHz) |
|---|---|---|---|---|---|---|---|
| CPIO and SWT | 7.00 | −24.78 | 3.33 | 1.15 | 0.02 | 3.32 | 3.34 |
| −11.11 | 3.52 | 2.00 | 0.03 | 3.51 | 3.54 | ||
| −20.11 | 4.04 | 1.28 | 0.13 | 3.98 | 4.11 | ||
| −13.64 | 4.37 | 1.73 | 0.01 | 4.36 | 4.37 | ||
| −13.00 | 4.72 | 1.78 | 0.11 | 4.68 | 4.79 | ||
| −33.79 | 6.49 | 1.05 | 0.18 | 6.46 | 6.64 | ||
| −11.17 | 7.89 | 2.06 | 0.07 | 7.85 | 7.92 | ||
| CPIO and SWOT | 6.00 | −13.37 | 2.91 | 1.54 | 0.03 | 2.90 | 2.93 |
| −23.80 | 3.46 | 1.13 | 0.02 | 3.45 | 3.47 | ||
| −26.30 | 4.05 | 1.10 | 0.11 | 4.00 | 4.11 | ||
| −12.93 | 4.73 | 1.58 | 0.06 | 4.70 | 4.76 | ||
| −34.54 | 6.52 | 1.03 | 0.16 | 6.50 | 6.66 | ||
| −10.00 | 7.71 | 1.96 | 0.02 | 7.70 | 7.72 | ||
| DCPIO and SWT | 3.00 | −12.89 | 3.83 | 3.00 | 0.06 | 3.80 | 3.86 |
| −10.00 | 7.06 | 6.77 | 0.02 | 7.05 | 7.07 | ||
| −13.79 | 8.83 | 2.33 | 0.51 | 8.54 | 9.05 | ||
| DCPIO and SWOT | 1.00 | −10.05 | 8.80 | 5.67 | 0.07 | 8.76 | 8.83 |