This book gives the over view of synthesis and characterization of low loss microwave dielectrics with the example of (Zr0.8Sn0.2)TiO4. The effect of processing parameters and smaller initial particle size on crystal structure, microstructure and on microwave dielectric properties of microwave dielectrics have been studied systematically. The microwave dielectric properties at low temperatures and the impedance spectroscopy of the microwave dielectrics have been reported. Thin films of (Zr0.8Sn0.2)TiO4 have been deposited by DC reactive magnetron sputtering from individual metal targets...