Microwave laminate material considerations for multilayer applications

RF and microwave systems have become increasingly sensitive to phase and dielectric constant variations in microwave laminates, due to the increased use of phase-fed networks, phase-steered antennas and wider temperature operating ranges. As such, today's advanced microwave systems require a higher degree of electrical stability in order to achieve their system goals, which in turn places a higher demand on the laminate materials used in the design. Electrical phase stability, dielectric constant control, and multilayer capability require innovations in microwave laminates. This paper explores the importance of these material parameters and reveals new innovations in these materials.