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This video shows how 3 different EM simulation technologies can be used to analyze a PCB
design. Here is the layout design in ADS. We will focus our analysis on one section
of the board. Once we have isolated a portion of the board, we set up a simulation for Momentum,
a 3D planar EM solver based on method of moments. Here is the Momentum mesh. Once the simulation
is complete we can use the EM based model in an ADS schematic design. Here we've connected
a source, probes and circuit components and have set up a channel simulation. Here are
the resulting eye diagrams, using the accurate EM-based model of the channel. Next we'll
use full 3D EM simulation to include the effects of connectors on the PCB design. EMPro,
a companion product to ADS, can be used to import, create and modify 3D structures like
this USB connector. We'll save it as an open access project. Then open it in ADS and
place the connector footprint on the PCB layout design. Here is the ADS 3D view of the connector
transition that we want to analyze. We'll use the full 3D Finite Element Method simulator
in ADS; here is the mesh. Once the simulation is complete we can visualize the field in
ADS. Next, we will run full 3D time domain EM analysis. We can export the ADS layout
design to EMPro. Once in EMPro, we can view and modify the design in 3D. We can also use
the Connectivity tool to verify contact between the connectors and the PCB traces. We'll
select the Finite Difference Time Domain solver, or FDTD from the list of solvers in EMPro.
FDTD is a very fast, memory efficient simulation technology, allowing us to quickly get a TDR
plot. We can also convert the time domain results to display the broadband frequency
response of each of the channels in this design. The integrated EM solution in ADS and EMPro
provides access to Momentum, FEM and FDTD simulation technologies, giving you a complete
picture of your design. For more information on Agilent's integrated 3D EM solutions,
please visit Agilent.com and request a free trial.