Plano-Concave Fabry-Perot Open Resonator
Bulk Metal
rigid sheets or plates of highly-conductive metals (e.g., copper, silver, aluminium).
Surface Conductivity Testing
Detects frequency-dependent influence of copper surface roughness and applied surface treatment to effective surface conductivity
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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20 – 130* GHz |
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5 × 104 – 6 × 107 S/m (achievable accuracy < 5%) |
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≥ 5 skin depths (e.g., a few µm for Cu) |
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150 – 195 mm |
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a few minutes |
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*Available also in various frequency-range configurations (e.g. 20 – 43 GHz, 20 – 50 GHz, 20 – 67 GHz, 20 – 110 GHz, 20 – 130 GHz etc.)
Overview
