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RJ45 ConnectorTransient Analysis Examples - Digital Signals
General Description
This example shows the calculation of an RJ45 connection concerning the propagation of digital pulses. The model consists of the connector and the corresponding socket, each containing eight wires for the signal transmission. The wires of the socket are fixed to a substrate plate, every other of them is additionally connected to a metallic ground plane. This provides some kind of shielding effect for the transmission of the wire signals.
Structure Generation
The structure is modelled in general by defining specific curves and finally extrude them to solid shapes. Hereby the advantage of the local coordinate system is used to determine the relative locations of the different created shapes. Identical elements are mirrored or multiplied and the loft functionality enables the construction of smooth strip line gradients. General settings concerning the background material, the absorbing boundary condition and the units are defined by applying an appropriate project template for planar connector applications. Here also some mesh settings are optimized for planar structures.
Solver Setup
To start the transient solver the excitation sources have to be defined, so all wires are terminated with discrete ports. To demonstrate the propagation of digital signals port No.1 is excited using a rectangular pulse.
Post Processing
The obtained time signals of the transient calculation are listed in the navigation tree in the folder 1D Results. They demonstrate the resulting deformation of a digital pulse while propagating along the RJ45 connection.
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