当前已研究出很多种测量超高频电介质的相对介电常数(ε)的方法。然而,这些方法都比较复杂或需要进行复杂的数学描述。因而限制了这些测量方法及其装置在介电材料的生产实践中的应用。图中给出了一种测量方法。该方法使用两 A number of methods have been developed to measure the relative permittivity (ε) of UHF dielectrics. However, these methods are complicated or require complicated mathematical descriptions. Thus limiting the application of these measurement methods and their devices in the production of dielectric materials. The figure shows a measurement method. This method uses two