An analytical fringe capacitance model for interconnects using conformal mapping

作者：Bansal Aditya^*; Paul Bipul C; Roy Kaushik

来源：IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 2006, 25(12): 2765-2774.

DOI：10.1109/TCAD.2006.882489

• confocal ellipses
• conformal mapping
• fringe capacitance

An analytical model is proposed to compute the fringe capacitance between two nonoverlapping interconnects in different layers using a conformal mapping technique. With this technique, electric field lines are geometrically approximated to separately model the different capacitive components. These components are finally combined to obtain the equivalent fringe capacitance. Using the aforementioned technique, a model was developed to compute the capacitances of typical interconnect geometries using technology-dependent parameters. The proposed model closely matches with FASTCAP results and significantly reduces the computational complexity and time in calculating the interconnect capacitances.

• 出版日期2006-12