Table 3.
Salient features of the proposed SIW-loaded MTM antenna array compared with recent publications.
| References | Type | Bandwidth [freq. range] | Gain (dBi) | Eff. (%) | Size (mm3) |
|---|---|---|---|---|---|
| 29 | Bowtie-slot | 15 GHz [90–105] |
Max − 1.78 |
– | 0.71 × 0.31 × 0.65 |
| 30 | Differential-fed | 20 GHz [50–70] |
Max − 3.2 |
– | 1.5 × 1.5 × 0.3 |
| 31 | Ring-shaped monopole | 20 GHz [50–70] | Max. 0.02 | Max. 35 | – |
| 32 | Circular open-loop | 10 GHz [57–67] |
Max − 4.4 |
– | 1.8 × 1.8 × 0.3 |
| 33 | AMC embedded squared slot antenna | 51 GHz [15–66] | Max. 2 | – | 1.44 × 1.1 |
| 34 | Monopole | 25 GHz [45–70] | Max. 4.96 | – | 1.953 × 1.93 × 0.25 |
| 35 | Loop antenna | 4 GHz [65–69] | Max. 8 | Max. 96.7 | 0.7 × 1.25 |
| 36 | Dipole-antenna | 7 GHz [95–102] | Max. 4.8 | – | – |
| 37 | Tab monopole | 30 GHz [45–75] | Max. 0.1 | Max. 42 | 1.5 × 1 |
| 38 | Patch fed higher order mode DRA | 25 GHz [330–355] | Max. 7.9 | Max. 74 | 0.2 × 0.5 |
| 39 | On-chip 3D (Yagi like concept) | 40 GHz [320–360] | Max. 10 | Max. 80 | 0.7 × 0.7 × 0.43 |
| 40 | Half-mode cavity fed DRA | 15 GHz [125–140] | Max. 7.5 | Max. 46 | 0.8 × 0.9 × 1.3 |
| 41 | Slot fed stacked DRA | 10 GHz [125–135] | Max. 4.7 | Max. 43 | 0.9 × 0.8 × 1.5 |
| 42 | DRA | 20 GHz [120–140] | Max. 2.7 | Max. 43 | 0.9 × 0.8 × 0.6 |
| 43 | 8 × 8 Magneto-electric dipole antenna array | 14.7 GHz [130.3–145] | Max. 20.5 | Max. 59.2 | 32 × 20 × 0.818 |
| 44 | 4 × 1 Patch antenna array | 32 GHz [259–291] | Max. 5.2 | – | 2.47 × 1.53 × 0.675 |
| 45 | 2 × 1 Octagonal shorted annular ring antenna array | 17 GHz [303–320] | Max. 4.1 | Max. 38 | 0.55 × 0.5 × 0.3 |
| This work | SIW-loaded MTM | 10 GHz [190–200] | Max. 12.2 | Max. 86 | 20 × 13.5 × 0.125 |