The printed circuit board Rogowski coil (PCB RC) has been widely applied in the complex electromagnetic environment, such as power electronic devices, where it is placed outside but very close to current-carrying conductors; thus, this brings great challenges to the anti-interference ability of it. Generally, the anti-interference ability of PCB RC is greater with more turns; however, the number of turns is limited by two aspects: the one is the bandwidth of PCB RC, which is reduced as the turns increase, and the other is the minimum distance between vias, which is determined by process technology. This article proposed a method of segmented turns arrangement of PCB RC to acquire better anti-interference ability almost without lowering the bandwidth and get closer to the technical limit of distance between vias. The segmented turns are designed to be stair-stepping rather than rectangular used in traditional integral turns, which is equivalent to splitting a complete rectangular turn into several small rectangular turns so that the turns density is increased with the anti-interference ability improved. As an example of the method, a square PCB RC with proposed segmented turns is designed and compared with the PCB RC with traditional integral turns, and the results of calculation and experiment show that the anti-interference ability of PCB RC with proposed segmented turns is enhanced to be doubled and very great even near the corner of the PCB RC.

中文翻译：

---

具有抗干扰能力的PCB罗氏线圈分段匝数布置方法


印刷电路板罗氏线圈（PCB RC）已广泛应用于复杂的电磁环境中，例如电力电子设备，其放置在外部但距离载流导体非常近；这对其抗干扰能力带来了很大的挑战。一般来说，PCB RC的匝数越多，抗干扰能力就越大；然而，匝数受到两个方面的限制：一是PCB RC的带宽，随着匝数的增加而减小，二是过孔之间的最小距离，这是由工艺技术决定的。本文提出了PCB RC的分段匝排列方法，以在几乎不降低带宽的情况下获得更好的抗干扰能力，并接近过孔间距的技术极限。分段匝被设计成阶梯状，而不是传统整体匝所采用的矩形，相当于将一个完整的矩形匝分割成几个小的矩形匝，从而增加了匝密度，提高了抗干扰能力。作为该方法的实例，设计了一种分段匝数的方形PCB RC，并与传统整体匝数的PCB RC进行了比较，计算和实验结果表明，分段匝数的PCB RC的抗干扰能力为增强了一倍，甚至在 PCB RC 的角落附近也非常好。