Table 2.
Energy consumption of the proposed coil designs in comparison with that of commercial coils. The energy required for a neural stimulation threshold of 100 V m−1 at 3 cm from the head’s surface, along with the footprint and the half penetration depth of each coil. Different AT coil parameters have been studied to demonstrate the performance trend of these coils.
| Coil Type | d1/2 (cm) | Footprint (cm2) | Energy (J) |
|---|---|---|---|
|
| |||
| Commercial Coils | |||
|
| |||
| 25 mm Figure-8 (#25) | 0.96 | 27.71 | 670 |
| 70 mm Figure-8 (#31) | 1.41 | 118.9 | 170 |
|
| |||
| Effect of Tilting Angle (OD-9, 5 Windings) | |||
|
| |||
| AT Single 10° | 1.78 | 62.65 | 160 |
| AT Single 40° | 1.7 | 59.78 | 320 |
| AT Single 70° | 1.61 | 21.76 | 610 |
|
| |||
| Effect of Winding Layers (OD-9, 70° Tilted) | |||
|
| |||
| AT Single—2 Windings | 1.55 | 21.76 | 390 |
| AT Single—5 Windings | 1.61 | 21.76 | 610 |
| AT Single—9 Windings | 1.69 | 21.76 | 960 |
|
| |||
| Effect of Outer Diameter (5 Windings, 70° Tilted) | |||
|
| |||
| AT Single—OD-4.5 | 1.4 | 5.44 | 1090 |
| AT Single—OD-9 | 1.61 | 21.76 | 610 |
| AT Single—OD-16 | 1.85 | 68.77 | 360 |
|
| |||
| Effect of Outer Diameter (4-Coil System) | |||
|
| |||
| 4-AT Coils OD-6 | 2.05 | 38.68 | 1730 |
| 4-AT Coils OD-9 | 2.46 | 87.04 | 1470 |