论文信息 - Millimeter wave measurements of temperature dependence of complex permittivity of GaAs plates by a circular waveguide method

Millimeter wave measurements of temperature dependence of complex permittivity of GaAs plates by a circular waveguide method

A circular waveguide method is improved to measure the complex permittivity of low loss dielectric plates using the TE/sub 0m1/ mode with integer m of the higher order accurately in the millimeter wave range. The measurement principle is described on the basis of a rigorous analysis by the mode matching technique. A mode chart presented is effective to identify many resonance modes observed in the measurement. The temperature dependences for GaAs plates were measured at 26 GHz for the TE/sub 011/ mode and at 40 GHz for the TE/sub 021/ mode. It is verified that this method is useful to measure the temperature dependence precisely. Moreover it is expected to be able to evaluate the quantity of lattice defects of GaAs crystal.

T. Shimizu | Y. Kobayashi | Y. Kobayashi | T. Shimizu

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