Clamped Stripline Resonator Method for High Frequency Dielectric Characterization
Clamped stripline resonators extract out-of-plane permittivity and loss tangent up to 10 GHz by measuring resonant modes of unclad dielectric sheets under pressure.
Understanding Glass Weave Effects in High Speed Differential PCB Stackups
Glass weave skew causes intra-pair phase delay in high-speed differential pairs, requiring spread glass, dual-ply prepreg, or off-axis panel rotation.
Differential Phase Skew Verification Using High Bandwidth Time Domain Reflectometry
High bandwidth TDR isolates sub picosecond differential phase skew on test coupons to prevent glass weave induced mode conversion in high speed channels.
Subassembly Lamination Rheology and Thermal Ramp Rate Control for High Speed Phase Skew Minimization
Dynamic lamination rheology control via 2.0-2.8°C/min platen ramp rates minimizes glass bundle tilt and resin squeeze-out to hold sub-picosecond phase skew.
Subassembly Press Parameters Influencing High Frequency Signal Phase Skew Control
Subassembly press hydraulic parallelism and thermal ramp control determine resin distribution, eliminating dielectric height variation and differential signal phase skew.
In-Situ Quasi-Optical Interferometry Resolving Thermo-Mechanical Dielectric Tensor Degradation across Sequential Reflow Cycling Interfaces
In-situ quasi-optical interferometry resolves thermo-mechanical dielectric tensor degradation across sequential reflow passes, preventing mmWave phase error.