Manufacturing microwave devices using additive printing technology with the use of ferrite pastes

Authors: Trufanova N. S., Ignatieva A. T., Artischev S. A., Trenkal E. I., Gadirov R. M., Ragimov E. R.

Annotation: This paper presents the results of an experimental study for the possibility of manufacturing microwave devices using ferrite pastes based on lithium-containing ferrite Li0.4Fe2.4Zn0.2O4. The composition of the binder was selected. The best values of porosity and coating quality were demonstrated by two samples of pastes: the first sample based on a binder of terpineol and PEG-400, and the second sample based only on PEG-400. The frequency characteristics of a microstrip transmission line with a ferrite sublayer with a thickness of 20 μm to 390 μm were studied. As a result, the following ferrite layer parameters were determined: ferrite permittivity ε = 16, dielectric loss tangent tgẟ = 0.3 and magnetic permeability μ = 43.

Keywords: peg-400, terpineol, paste, microstrip line, ferrite, printer technology