ADVANCED FERRIMAGNETIC MATERIALS APPLIED TO DIGITAL PHASE SHIFTERS
Abstract
The operating characteristics of microwave ferrite digital phase shifters and the dependence of these characteristics on material parameters are discussed. The experimental investigations on materials to date have concentrated on the hybrid garnet compositions. Compositions comprised of individual and composite substitutions of the following metal ions in yttrium iron garnets have been prepared and evaluated: gadolinium, holmium, dysprosium, erbium, terbium, samarium, ytterbium, aluminum, and gallium. The structural, microwave, and magnetic characteristics of these compositions have been tabulated. The influence of the preparation procedure parameters on the properties of the materials are described. Conclusions are offered in regard to the material characteristics tabulated with additional interpretation on structural effects. RF evaluation of some of the materials has been performed in X-band waveguide. The results of these investigations are discussed.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0610632