High temperature waveguide measurements of the permittivity and permeability

This paper describes a setup for measurements of the permittivity and the permeability at temperatures from room temperature up to 1000°C using a single rectangular waveguide. The hardware design of the setup that can handle these temperatures is developed and described. Measurements on a NiZn ferrite sample are performed in order to evaluate the performance of the setup and the procedure that is used to determine the permittivity and permeability from the measured S-parameters.