Indoor Wi-Fi Antenna at 2.4 GHz


Near field results of indoor Wi-Fi antenna after simulating the models at 2.4 GHz are presented. The Wi-Fi antenna itself is positioned inside the room with brick walls. In addition, near field results for the model of the antenna in free space at 2.4 GHz are also presented. The near field distribution inside of the room is plotted in 501×501 points. All the simulations are performed using WIPL-D software suite.

After applying optimal meshing parameters, the model of a Wi-Fi antenna at 2.4 GHz was first simulated without any reduction. The second simulation of the indoor Wi-Fi antenna was performed with smart reduction applied. The Wi-Fi antenna is positioned in such a manner that two symmetry planes can be used. Computer used for these simulations is a regular PC equipped with a GPU card which is used in method-of-moments (MoM) matrix inversion. The simulation time for all scenarios is acceptable from engineering point of view.

With smart reduction applied, the number of unknowns in simulated scenarios decreases around 2 times (the computer memory requirement decreases around 4 times), while the simulation time decreases around 9 times. The time saving feature comes without noticeable changes in values of the calculated near field. Furthermore, all antenna simulations yield theoretically expected results. When compared with free space results, it is clear that the results obtained for the WI-Fi antenna located within a room show the reflections from the walls.

Section: Antenna Placement

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