Future commercial and military communication systems require a new class of antennas and radio frequency (RF) front-ends that are small, light-weight, conformal, and multi-functional. This dissertation is dedicated to the development and application of the novel polymer-ceramic composites for future compact multilayer antennas and RF systems. The first half of the dissertation deals with the fabrication and characterization of the polymer-ceramic composites. Also, carbon nanotube (CNT) sheets are introduced for the first time to overcome the issues of reliable printing on polymers....