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Where walls are defined, the relevant refractive indices and loss tangents for 2.4GHz radiation are used. The edges of the image use absorbing boundary conditions as in Mur 1981, IEEE Transactions on Electromagnetic Compatibility.
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When the simulation is stopped a GIF animation is generated.Īn antenna oscillates at 2.4 GHz. To start recording a simulation click the record 'R' button. Use the WiFi FDTD Solver app to find a good router position. Place the router in an area close to where you are. The presence of a wall can block the connection from wifi. The location is very important because the router has a limited signal range. Images are saved to internal/external storage and added to the end of the camera roll. Router is very important for wifi connection. To save the simulation output as an image, click Save at any time. Click stop to pause at any time - this saves the simulation progress which can be continued by clicking run again. Set the number of iterations to run for, how often to plot the result, and the upper limit on the colourmap scale.Ĭhoose a field to plot - the default is the out-of-plane electric field.Ĭlick run and the simulation will begin. Select the antenna parameters at the bottom. Touch the image to set a router location, marked by a red circle. The simulation is limited in speed due to the mobile processor, so try to keep images below approximately 500x500 pixels Pixels are mapped to 1 centimetre, so scale the floorplan appropriately. Images will be converted into the correct materials on loading - this may take a few seconds. png file, with empty space marked black and materials marked with colours. An example floorplan is included in the app. Kami nyanghareupan salah sahiji aplikasi anu ti jaman ka jaman ngajantenkeun urang bobo henteu percanten naon anu tiasa dilakukeun, tapi memang, aplikasi ieu anu disebut WiFi Solver FDTD, bakal. This app uses the 2D Finite Difference Time Domain method to solve Maxwell's equation on a Cartesian grid. This is based on a recent blog post 'Helmhurts' at which was featured on io9, Ars Technica, the Daily Mail, Scientific American and many other blogs. With this app you can take a floorplan of your house, set the location of a WiFi router, and simulate how the electromagnetic waves propagate - see an example here: