Non-linear silane interphase hydrolysis inside substrate micro-cracks degrades high-frequency signal integrity by driving localized dielectric permittivity shifts.
Quantify anisotropic permittivity drift by extracting tensor components across environmental chambers to preserve differential impedance and phase margins.
Adhesiveless polyimide substrates eliminate high-loss acrylic adhesives, dropping dielectric loss tangents to 0.002 at 10 GHz when paired with smooth rolled copper.
Structural strain transfer requires minimal bondline thickness, high shear modulus adhesives, and precise surface roughness matching to prevent measurement lag.
Sequential lamination induces non-linear dielectric relaxation at glass-resin interfaces, shifting Dk up to 0.14 and altering impedance by over 4 ohms.
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