Simplified Equivalent Golden Finger Port Setup for Fast and Accurate High-Speed Channel Simulation

A simplified equivalent golden finger port setup is proposed for efficient, accurate 3D full-wave simulation for high-speed channels. The bent connector pins, which mate with the golden finger, are simplified as equivalent cylindrical pins to meet the wave port setting requirements for 3D full-wave simulation. The effects of the equivalent cylindrical pin location and diameter are analyzed through 3D full-wave simulation. A closed-form expression is newly proposed to correlate the location and diameter of the equivalent cylindrical pin with respect to the widely used bent connector pin. On the basis of the closed-form expression, the bent connector pin can be accurately replaced by the simplified equivalent cylindrical pin structure in 3D full-wave simulation. Practical examples using commercial high-speed connector pin models with gold fingers verify that the proposed modeling method is accurate and efficient up to 40 GHz.