I am designing a board with high speed HD-SDI signals. The data is single ended HD-SDI. There are circuits which convert it into differential HD-SDI followed by another circuit that converts it into single ended HD-SDI. Now, before going into layout I would like to simulate it for any signal integrity issues. Is Microwave Office a good tool for such an analysis ? This is just a preliminary doubt. Any other open source tools that can do the same ?