Title :
A new twisted differential line structure on high-speed printed circuit boards to enhance immunity to crosstalk and external noise
Author :
Kam, Dong Gun ; Lee, Heeseok ; Jonghoon Kim ; Kim, Jonghoon
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
Differential signaling has become a popular choice for high-speed interconnection schemes on Printed Circuit Boards (PCBs), offering superior immunity to external noise. However, conventional differential transmission lines on PCBs have problems, such as crosstalk and radiated emission. To overcome these, we propose a Twisted Differential Line (TDL) structure on a multilayer PCB. Its improved immunity to crosstalk noise and the reduced radiated emission has been successfully demonstrated by measurement. The proposed structure is proven to transmit 3 Gbps digital signals with a clear eye-pattern. Furthermore, it is subject to much less crosstalk noise and achieves a 13 dB suppression of radiated emission.
Keywords :
circuit noise; crosstalk; interference suppression; printed circuits; transmission lines; 3 Gbit/s; crosstalk immunity; differential signaling; digital signal transmission; eye pattern; high-speed interconnection; multilayer printed circuit board; noise immunity; radiated emission suppression; transmission line; twisted differential line structure; Circuit noise; Crosstalk; Distributed parameter circuits; Integrated circuit interconnections; Magnetic field measurement; Noise measurement; Nonhomogeneous media; Printed circuits; Strips; Transmission line measurements;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.815181
