The reinforcement type defines two major classes of materials - woven and non-woven. Woven reinforcements are cheaper, but the high dielectric constant of glass may not be favorable for many higher-frequency applications. The spatially nonhomogeneous structure also introduces local variations in electrical parameters, due to different resin/glass ratio at different areas of the weave pattern. Nonwoven reinforcements, or materials with low or no reinforcement, are more expensive but more suitable for some RF/analog applications. COUNT 5
QSN1 Along with the non-woven class, what makes up the reinforcement type materials? ANS1 woven QSN2 Which is the more expensive reinforcement type? ANS2 non-woven QSN3 What type of structure do woven reinforcements have that cause them to have variation in their electrical parameters? ANS3 spatially nonhomogeneous QSN4 Which ratio varies because of the structure of woven reinforcements? ANS4 resin/glass QSN5 For what kind of applications are non-woven reinforcement materials better than woven ones? ANS5 RF/analog