Crosstalk analysis between finite-length microstrip lines in neighborhood

✍ Scribed by Weikun Liu; Yoshio Kami

• Book ID: 101292753
• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 334 KB
• Volume: 123
• Category: Article
• ISSN: 0424-7760
• DOI: 10.1002/(sici)1520-6416(19980430)123:2<8::aid-eej2>3.0.co;2-9

✦ Synopsis

If two transmission lines such as microstrip lines are set in the neighborhood, a coupling or crosstalk phenomenon may be generated between them. When the coupling level is low, the phenomenon can be considered as a coupling of external fields by one transmission line to the other transmission line; a set of nonhomogeneous differential equations with regard to a line voltage and current holds approximately. The fields can be obtained by estimating vector potentials of currents on the line section and the terminals in terms of a terminal voltage and current of the line concerned. Thus, a solution to the equations can be obtained in expression of a four-port network. Estimation of the coupling between microstrip lines is made by applying the terminal conditions to the expression. To confirm the theory, an experiment has been conducted; the experimental results are in good agreement with the theory.