Extraction of distributed capacitance for microstrip lines using conformal technique based on finite-difference method

摘要

In this paper, a novel method using conformal technique of finite-difference method (FDM) is proposed to solve the distributed capacitance for microstrip lines. Instead of deriving the average dielectric constant ε, this method uses electric field numerical weights to process the inhomogeneous cells, and takes the discontinuous effects of both inhomogeneous Ampere cell and Faraday cell into account. The new method shows good agreement with the measurement and traditional methods.