Broadband high frequency impedance spectrometer with working temperatures up to 1200 K

An experimental method and a corresponding setup have been developed for investigation of impedance spectra and other electrical properties of solid materials in radio frequencies from 300 kHz to 3000 MHz and temperature range 300–1200 K. The method is based on the measurement of S-parameters for a 2-port network made of a coaxial waveguide and a sample, inserted in the gap of a central conductor. Experimental setup is based on measuring device — Agilent E5062A network analyzer and is controlled by an application developed on base of Matlab environment. A sample holding coaxial waveguide is made of platinum covered refractory ceramics, which distinguishes itself by low thermal expansion; this enables accurate impedance measurement at high temperatures.