Local geometry defines the RF linePTFE vs Thermoset Rogers Laminates. Engineering illustration, not a production photograph or test result.Local geometry defines the RF linePTFE vs Thermoset Rogers LaminatesPTFE vs Thermoset Rogers LaminatesDielectric: use an appropriate model DkContinuous reference planeWidth WhAir / defined coverh is the distance to the reference plane, not total board thickness.