Table 2.
Comparison of the proposed dual-band 28/38 GHz circularly polarized antenna with recent antenna designs reported in the literature.
| [9] | Antenna Size ( ) |
Polarization | Gain at 28/38 (dBi) | Efficiency at 28/38 (%) | Operating bandwidth (GHz) | Isolation (dB) | axial ratio bandwidth at 28/38 (GHz) | ECC at 28/38 GHz |
|---|---|---|---|---|---|---|---|---|
|
Circular | 6.8/5.9 | 85/80 | 27.6–28.3 35.2–47.2 |
NA | NA | NA | |
| [10] |
|
Circular | 6.2/5.9 | 92/90 |
27.2–29.2 36–40 |
36/36 |
27.82–29.08 37.3–38.23 |
|
| [11] |
|
Linear |
5.56 dBi (w/o AMC) 8.23 dBi (with AMC |
NA |
27.3–30.9 34.9–40 |
26/27 | NA | 0.05/0.04 |
| [12] |
|
Linear | 8.3/4.9 | 91/84 | 27.5–29.5 32.6–44.3 | 20/20 | NA | NA |
| [13] |
|
Linear | 7.4/5.2 | 88.8/88 |
27.7–28.3 36.2–39.1 |
24/26 | NA | NA |
| Present Work |
|
Circular | 7.5/5.5 | 87/82 |
27.6–28.4 37.5–38.3 |
35/27 |
27.6–28.18 37.75–38.25 |
|