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Shielding effectiveness of tested samples containing petroleum coke.
| Graphite Content by Volume (%) | Layer Thickness (mm) | Shielding Effectiveness (dB) | |
|---|---|---|---|
| 1.0 GHz | 1.5 GHz | ||
| 0 | 4.36 | 4.00 | 2.42 |
| 0.51 | 4.38 | 43.5 | 44.6 |
| 1.02 | 4.41 | 47.3 | 49.2 |
| 3.06 | 4.35 | 48.2 | 50.2 |
| 6.12 | 4.66 | 49.3 | 51.6 |
| 9.18 | 4.77 | 49.7 | 51.9 |
