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RF modeling in relatively big structure
Posted Jan 14, 2011, 9:25 a.m. EST Version 4.0a 0 Replies
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I’m trying to model RF communication in industrial medium. So a 3D CAD file is imported into COMSOL with dimensions 20x12.5x4.5 [m] representing the harsh industrial environment with pillars and metallic obstacles. Then I model a dipole antenna operating at 2.4 GHz, and I wish to simulate for the field and power in the environment. However, I’m facing a big problem: 2.4 GHz makes lambda= 0.125 m. And for the solution to have any meaning at all, the mesh size must at least fulfill the Nyquist criterion, meaning that the maximum element size= lambda/2. This divides the domain into a very big number of elements that any ordinary computer could not solve. A rough estimation gives that it is needed a supercomputer with more than 4000 GB RAM !!!
I was wondering if there is any method that I could simulate the system with reasonable specification and obtain the required solution, knowing that no high precision is required…
Thank you
Hello Amr Habib
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