Reverberating chambers (RCs) are electrically large microwave enclosures in which a random electromagnetic 3-D, i.e., nonplanar, field is generated. To characterize such 3-D fields, a proper polarimetric decomposition is requested. In this article, a new set of parameters, namely the components of purity (CP), first proposed to the electromagnetic compatibility community, is presented. The CP parameters, which stem for the so-called trivial decomposition, are able to classify any 3-D polarimetric field into two states: regular and nonregular. Such characterization is of practical relevance, e.g., for RC isotropy testing.

中文翻译：

---

描述混响室内 3-D 场极化状态的纯度成分

混响室 (RC) 是大型电微波外壳，在其中生成随机电磁 3-D，即非平面场。为了表征这种 3-D 场，需要进行适当的极化分解。在本文中，介绍了一组新的参数，即首次向电磁兼容性社区提出的纯度 (CP) 成分。CP 参数源于所谓的平凡分解，能够将任何 3-D 极化场分为两种状态：规则和非规则。这种表征具有实际意义，例如，对于 RC 各向同性测试。