This article presents a configurable high directivity radio frequency reference noise source and its radiated emission (RE) simulation model. This noise source is a representative of actual programmable logic controller (PLC) and input output (IO) products with a high-speed gigabit backplane. It is designed to produce a reference noise signature from 30 MHz to 6 GHz with RE levels close to the class A electromagnetic radiation disturbance limits of CISPR 11 and CISPR 22. An RE model f this noise source was established to investigate the design factors. Multiple emissions’ scans were performed in two separate semianechoic chambers located in different facilities in order to test the repeatability of this noise source. The measurement results indicated that the noise source has very good repeatability and that it can serve as a reference noise source. The results were also used to evaluate the maturity of the simulation technology as well as to quantify the difference between chambers.

中文翻译：

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用于站点相关性的高指向性参考射频源及其辐射发射模型

本文介绍了一种可配置的高指向性射频参考噪声源及其辐射发射 (RE) 仿真模型。这种噪声源是具有高速千兆背板的实际可编程逻辑控制器（PLC）和输入输出（IO）产品的代表。它旨在产生 30 MHz 至 6 GHz 的参考噪声特征，其 RE 水平接近 CISPR 11 和 CISPR 22 的 A 类电磁辐射干扰限值。建立了此噪声源的 RE 模型以研究设计因素。在位于不同设施的两个独立的半消声室中进行多次发射扫描，以测试该噪声源的可重复性。测量结果表明噪声源具有很好的重复性，可以作为参考噪声源。结果还用于评估模拟技术的成熟度以及量化腔室之间的差异。