1.1本试验方法涵盖了测定各向同性、互反（非旋磁）固体材料的相对复介电常数（相对介电常数和损耗）和相对磁导率的程序。如果材料是非磁性的，则可以使用此程序仅测量介电常数。 1.2该测量方法在约1 MHz至20 GHz的频率范围内有效。这些限制并不精确，取决于样本的大小、用作样本支架的同轴空气线的大小以及用于进行测量的网络分析仪的适用频率范围。实际的低频和高频受到试样尺寸要求的限制（低频下的大厚试样和高频下的小试样）。对于给定的空气管路尺寸，高频也受到高阶模式的开始的限制，这些模式使主风管失效- 模式传输线模型和较低频率受到通过样本的最小可测量相移的限制。作为一种非谐振方法，可以在测量频带中选择任意数量的离散测量频率。当需要单个样本的宽带数据或只有小样本量可用时，尤其是对于低频测量，同轴夹具优于矩形波导夹具 1.3以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值；因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。此处所示的方程假设为e +j ω t 谐波时间约定。 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 射频（RF）、微波和毫米波组件的设计计算需要了解工作频率下的复介电常数和磁导率值。该测试方法有助于评估电磁应用中使用的小实验批次或连续生产材料。使用此方法仅测定复介电常数（在非磁性材料中）或同时测定复介电常数和磁导率。

1.1 This test method covers a procedure for determining relative complex permittivity (relative dielectric constant and loss) and relative magnetic permeability of isotropic, reciprocal (non-gyromagnetic) solid materials. If the material is nonmagnetic, it is acceptable to use this procedure to measure permittivity only. 1.2 This measurement method is valid over a frequency range of approximately 1 MHz to over 20 GHz. These limits are not exact and depend on the size of the specimen, the size of coaxial air line used as a specimen holder, and on the applicable frequency range of the network analyzer used to make measurements. The practical lower and upper frequencies are limited by specimen dimension requirements (large, thick specimens at low frequencies and small specimens at high frequencies). For a given air line size, the upper frequency is also limited by the onset of higher order modes that invalidate the dominant-mode transmission line model and the lower frequency is limited by the smallest measurable phase shift through a specimen. Being a non-resonant method, the selection of any number of discrete measurement frequencies in a measurement band would be suitable. The coaxial fixture is preferred over rectangular waveguide fixtures when broadband data are desired with a single sample or when only small sample volumes are available, particularly for lower frequency measurements 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. The equations shown here assume an e +j ω t harmonic time convention. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== Design calculations for radio frequency (RF), microwave and millimetre-wave components require the knowledge of values of complex permittivity and permeability at operating frequencies. This test method is useful for evaluating small experimental batch or continuous production materials used in electromagnetic applications. Use this method to determine complex permittivity only (in non-magnetic materials) or both complex permittivity and permeability simultaneously.