摘要
本文介绍一个测定不能进行机械加工的“坚实材料”（农产品或矿物）的微波介电特性的新方法．将这类材料研碎，成为“空气－粒子”混合物．应用短路波导方法，在几个不同的混合物“松密度”上测量其介电特性（介电常数和损耗因子）．当已知待测材料的“坚实密度”时，利用这些测量的特性与混合物“松密度”的线性函数关系进行“外推”，从而获得“坚实密度”
A new method is described for determining the microwave dielectric properties of solid materials,for example agricultural products,mineral,of known densities from the dielectric properties of pulverized samples measured by employing the short circuited waveguide principle at a few different bulk densities.Properties for the solid are obtained by extrapolation of functions of the dielectric constant and loss factor that are linearly related to the bulk density of the air particle mixture.
基金
国家自然科学基金
关键词
农产品
微波介电特性
短路波导法
磨碎
short circuited waveguide method
linear extrapolation
agricultural product
microwave dielectric properties
