Crosstalk analysis of multisection multiconductor lines

An effective method for crosstalk characterization and modeling of multisection multiconductor transmission lines, as in the case of tape automated bonding (TAB) packages, is introduced. The method uses two-dimensional field analysis software packages to calculate the electrical parameters of the transmission lines´ sections. These parameters are then used to establish a preliminary model for the multisection multiconductor structure. Time-domain measurement and simulation techniques are then used to refine the model parameters. Using this model, the lines´ coupling behavior (crosstalk) can be predicted. Time-domain measurement applied to a section of a TAB structure is provided to demonstrate the modeling concept, and the corresponding crosstalk waveforms are presented.<>