Hybrid construction can limit premium material areaA hybrid stackup can separate RF and other circuit functions. Continuous references and qualified bonding remain necessary; this drawing is not a production stackup.Hybrid construction can limit premium material areaConceptual RF / FR-4 stackup; thickness and grade are project-specific.RF signal copperRF coreContinuous referenceCompatible bondplyFR-4 regionLower referenceRF routing stays referenced; bonding and Z-axis reliability still need review.³Ô¹Ïtv engineering illustration · not a production record · not to scale