摘要
介绍了六类线标准(Cat 6)中网络信号在印制电路板(PCB)中的走线设计方法。在六类线标准中带宽达到了250 MHz,比通常使用的五类线标准整整高出了1.5倍,因此随之而来的信号串扰问题也更为严重。本设计采用了微波射频领域中使用的交指电容滤波器,成功地解决了信号串扰问题,并且本文提出了一种在PCB中设计交指电容的全新方法。同时由于没有采用实体电容,有效地降低了PCB的设计成本。最终结合三维高频电磁仿真软件CST对本设计进行了仿真,提高了设计效率和精度[7]。
This paper introduces the method of network signal routing in printed circuit board （PCB） for Cat 6. The bandwidth in Cat 6 reaches 250 MHz, which is 1. 5 times higher than Cat 5, so the problem of crosstalk is more serious. This design utilize interdigital capacitors which are widely used in microwave and radiofrequency field to successfully solve the problem of erosstalk, and this paper proposes a new method of designing interdigital capacitors in PCBs. Meanwhile, solid capacitors are not used in the design that it can reduce the cost of PCB effectively. Finally, the design is simulated by 3-D high-frequency electromagnetic simulation software CST, which improves the efficiency and precision of the design.
出处
《电子测量技术》
2015年第11期131-134,142,共5页
Electronic Measurement Technology
