Viscous dielectric materials for application in microwave microcircuits

Viscous dielectric materials made from mixtures of titania and Vaseline cover the relative-permittivity range from approximately 4 to 30. The main application is in experiments with microwave microcircuits. Measurements are reported using a resonance method with a cavity developed for this work. A previously quoted expression, giving mixture relative permittivity as a function of its component relative permittivities and their proportions, is shown to hold for this case.