Introduction

In this project, you will perform a transient analysis of a Ball Grid Array (BGA) IC package. You will visualize the propagation of a short pulse by creating a transient plot of Y1 vs. Time, create a transient plot of the residual, obtain S-parameters over a broad frequency range, and view an overlay of the transient E-fields.

The geometry corresponds to a portion of a BGA-type chip package. The model has four signal lines as well as power and ground nets.

Network Analysis

You can perform a network analysis in both the frequency domain and the time domain (transient analysis). In addition to obtaining the familiar S-parameters, you can perform the analysis in the time domain to visualize the propagation of a short pulse through a device. You will do so in this exercise.

Sample Project: BGA IC Package

The model is installed with the Ansys Electronics Desktop application, and it is located in a subfolder within the Help branch of the installation path.

The geometry is complete – no additions or modifications are needed. However, you will apply the excitations, set up and run the analysis, and generate the reports and field overlay.

Figure 1-1: BGA IC Package Geometry