Research Article
A Study of the Anechoic Performance of Rice Husk-Based, Geometrically Tapered, Hollow Absorbers
Table 1
Measured range of dielectric properties of the two fabricated samples in different frequency bands.
| Sample | Properties | C-band (4–8 GHz) | X-band (8–12 GHz) | -band (12–18 GHz) |
| Rice husk | | 2.50–2.80 | 2.00–2.60 | 1.75–2.25 | | 0.45–0.60 | 0.30–0.48 | 0.30–0.40 |
| Tire dust | | 3.90–4.50 | 3.25–3.90 | 3.06–3.60 | | 0.25–0.40 | 0.17–0.25 | 0.17–0.30 |
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