Dielectric Resonators for Conductors
Bulk Metal
rigid sheets or plates of highly-conductive metals (e.g., copper, silver, aluminium).
Conductive foils
thin, flexible metal foils such as rolled copper; the resonator probes their surface conductivity even at micrometre-level thicknesses.
Copper-Clad laminates
PCB-grade dielectric panels coated with copper; the instrument measures the electrical conductivity of the copper cladding.
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14 & 20 GHz or 28 & 44 GHz |
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σ = 105 – 6 × 107 S/m |
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23 × 23 mm – 60 × 60 mm |
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≥ 3 skin depths (e.g., a few µm for Cu) |
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