Microwave absorbing composites for vacuum electronics: New material compositions with unusual frequency responses and improved characterization of existing materials

摘要

Microwave absorbing composites are of considerable importance in vacuum electronics, and therefore present an opportunity for further research. The synthesis and complex dielectric properties of new types of transition metal spinel-based microwave absorbing composites with unusual frequency responses are described. Also presented are improved dielectric measurements of more traditional BeO-SiC absorbers.