Research Article
Compact Dual-Band Circularly Polarized Stacked Patch Antenna for Microwave-Radio-Frequency Identification Multiple-Input-Multiple-Output Application
Table 2
Performance comparison with other proposed dual-band dual-port CP antenna systems.
| | Ref. | Dimensions (λ3) | Number of radiating elements | Center frequency (GHz) | IMBW (%) | ARBW | Isolation (dB) | Gain (dBic) |
| | [10] | 1.6 × 1.6 × 0.5 | 8 | 12 | 16.4 | 13.3% | 20 | 13 | | 14 | 16.7 | 7.4% | 20 | 13 |
| | [11] | 2 × 2 × 0.08 | 4 | 5.3 | 15.1 | 9.4% | 15 | 13 | | 8.2 | 9.7 | 6.1% | 20 | 17 |
| | [12] | 1.3 × 1.3 × 0.07 | 4 | 7.4 | 5 | 3.2% | 25 | 10 | | 8.1 | 6.2 | 3.7% | 25 | 10 |
| | [13] | 0.9 × 0.9 × 0.05 | 4 | 4 | 25 | — | 26 | 10 | | 5.6 | 15 | 26 | 10 |
| | [14] | 0.62 × 0.62 × 0.1 | 2 | 5.8 | 3.4 | 8.6% | 25 | 5.97 | | 7 | 3.6 | 1.4% | 20 | 4 |
| | [15] | 0.5 × 0.5 × 0.05 | 5 | 0.915 | 2.8 | 2.8% | 25 | −0.6 |
| | This work | 0.5 × 0.5 × 0.11 | 1 | 2.45 | 12.7 | 3.5% | 25 | 7.3 | | 5.8 | 5.1 | 6.2% | 30 | 7.3 |
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