Measurement of complex permittivity of solids up to 1000/spl deg/C

A technique suitable for measuring the permittivity of solids up to 1000/spl deg/C in X-band is introduced. Although techniques for permittivity measurements are well known, there exist a lot of technological problems such as calibration and choosing the right material for carrying out measurements at high temperatures. We present a method to determine the complex permittivity over the whole temperature range from room to high temperatures using only one calibration and measurement cycle.