频率和温度对鲍鱼介电特性的影响

Effect of frequency and temperature on the dielectric properties of abalone

采用同轴探针方法分别测定了20～120℃,频率300～3000MHz内鲍鱼的介电常数和介电损失。温度一定时,鲍鱼的介电常数和介电损失均随频率的升高而减小。频率一定时,介电常数随温度升高,先增大后减小,介电损失随温度的升高而增大。本研究提出了在915、2450MHz下,介电常数和介电损失随温度变化的预测方程,预测值与实验值有较好的一致性。在915、2450MHz下,鲍鱼的穿透深度均随着温度的升高而减小。

The dielectric constant and loss factor of abalone were determined by the open-ended coaxial probe method in the frequency range from 300 to 3000MHz and temperature from 20 to 120℃.The dielectric constant and loss factor decreased with the increase of the frequency.While with the increase of temperature,the dielectric constant changed quadrially：first increasing and then decreasing.The loss factor increased with the increasing temperature.Predictive equations related to the dielectric properties of abalone was developed as a function of temperature at 915 and 2450MHz,and proved to be reasonable.The temperature had a negative correlation with the penetration depths at 915 and 2450MHz.