Table 2
Modeled and measured relative permittivity in the DM and HM analog models.
| Percentage of | Mixing model | |||||||
|---|---|---|---|---|---|---|---|---|
| Part | Estimate type | Analog | material | CRIM | MG | EXP | Nominal | Measured |
| Filament | A priori | DM, HM | 100 | 4.50 + j0.02 | ||||
| A posteriori | DM, HM | 100 | 4.19 + j0.06 | |||||
| Interior | A priori | DM, HM | 90 | 4.04 + j0.02 | 3.83 + j0.02 | 4.01 + j0.02 | ||
| A posteriori | DM, HM | 90 | 3.76 + j0.05 | 3.59 + j0.04 | 3.75 + j0.05 | 3.40 + j0.04 | ||
| Mantle | A priori | DM | 66 | 3.03 + j0.01 | 2.65 + j0.01 | 2.96 + j0.01 | ||
| A posteriori | DM | 66 | 2.86 + j0.03 | 2.55 + j0.02 | 2.80 + j0.03 | 2.56 + j0.02 | ||
| Void | A priori | DM | 0 | 1.00 | 1.00 | 1.00 | 1.00 | |
Notes. The a prioriestimates refer to the nominal permittivity value of the ABS450 filament which has been measured by the manufacturer at 2.4 GHz frequency. The a posteriori estimates have been obtained by performing bistatic far-field scattering measurements (Eyraud et al. 2015) with the 3D-printed spheres as targets and, in the case of the mixing models, referring to the permittivityof the 100% filled sphere. The best match between a priori and a posteriori values is obtained with the MG mixing model.
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