| Dielectric Material | Field Strength (V/mm) | 3rd Harmonic Level (dBm) |
| Nylon-66 | 700 | −106 |
| Polythene | 2000 | −88 |
| Polystyrene | 2250 | −94 |
| Al.(AL2O2) | 2250 | Not Detected |
| PTFE | 2250 | Not Detected |