METHOD AND APPARATUS FOR MEASURING THE MICROWAVE PARAMETERS OF NONLINEAR CERAMICS IN CONTROL ELECTRIC FIELDS

摘要

A method and apparatus are developed for measuring the dielectric loss factor and permittivity as functions of a controlling electric field for nonlinear dielectric ceramics at frequencies of 200-2000 MHz. Data on these dependences are shown for ferroelectric ceramic samples of Ba_xSr_(1-x)TiO_3 with different compositions and control voltages up to 10 kV.