Effective Conductivity of Additive-Manufactured Metals for Microwave Feed Components

This paper characterizes the effective conductivity of lossy metal materials fabricated with additive manufacturing processes at microwave frequencies using a resonant cavity approach. Specifically addressed is powder bed fusion process utilizing AlSi10Mg material Ku-band. The details procedure for converting device parameters that characterize to properties are given. Trade-offs between precision and quality factor discussed relevant design cavity. A best-fit matching made measured response manufactured cavities simulated results. statistical deviation various from different vendors reported. Examples designs prototype waveguide feed components presented. predicted performance each component compared, validating process.