Composite Materials Development for Fused Filament Fabrication of RF Systems

摘要

In this paper we present the development offeedstock materials, specifically tailored permittivity materialsused in fused filament fabrication (FFF), for microwaveapplications. One of the major bottlenecks in utilizing additivemanufacturing for useful radiofrequency (RF) applications isthe lack of suitable materials. Flexible, high-dielectric constantand low dielectric loss tangent composite materials, consisting ofa mixture of polymer and ceramic nanoparticles in controlledvolume fractions, are manufactured. Effective mediumapproximations (EMA) to predict composite properties, such asBruggeman approximations, are validated with measurementsbetween 18 – 40 GHz and are presented.