High-Permittivity Microwave Dielectrics

Abstract

This article is devoted to main physical properties of microwave high dielectric permittivity ceramics, including: (i) the nature of thermostability of low-loss microwave dielectrics that are used as dielectric resonators and substrates; (ii) the features of nonlinear low-loss paraelectric films which could be used in fast microwave phase shifters by the electrically controlling their permittivity; (iii) microwave permittivity dispersion in ferroelectric ceramics which are promising materials for microwave absorbent coatings.