Dielectric Properties of Alumina Ceramics in the Microwave Frequency at High Temperature
The dielectric properties of alumina ceramics have been measured using a free-space time-domain technique from room temperature to 1400 oC in the frequency range 8.2 – 12.4 GHz. The effects of thickness and lateral size of specimen were investigated with comparing the measured values to the calculated ones based on the half-wavelength and the Gaussian beam focusing. From these results the optimum specimen dimension for the high temperature dielectric measurement was suggested with experimental verification.
Byung Tae Ahn, Hyeongtag Jeon, Bo Young Hur, Kibae Kim and Jong Wan Park
M. K. Park et al., "Dielectric Properties of Alumina Ceramics in the Microwave Frequency at High Temperature", Solid State Phenomena, Vols. 124-126, pp. 743-746, 2007