Broadband Microwave and W-Band Characterization of BeO-SiC and AIN-Based Lossy Dielectric Composites for Vacuum Electronics

Abstract

The complex dielectric permittivity properties of lossy ceramic materials used in vacuum electronics are presented. The studies include broadband room temperature behavior in the 0.1-18 GHz range and in W-Band (75-110 GHz). Variable temperature measurements of selected materials at 94 GHz are also presented