Inverting sub-terahertz dielectric tensors requires decoupling core micro-fracture damage from copper roughness spectral density to preserve phase velocity.
Pairing mid-loss resins with HVLP copper cuts high-frequency trace attenuation by up to 38 percent without forcing transitions to expensive ultra-low-loss substrates.
Selecting dielectric substrates requires balancing dissipation factor, glass weave uniformity, foil roughness, and panel yields to meet high-speed impedance targets.
High-frequency laminate rheology dictates prepreg flow kinetics, fixing pressed dielectric thickness, local impedance stability, and panel registration yield.
Mid-loss laminates paired with low-roughness copper foil match high-cost ultra-low-loss performance at a fraction of the raw panel price.
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