Installing ceramic or porcelain tile is both an art and a science. Tile installers must know the composition of the tiles as well as how to lay them in place attractively. Besides the normal costs of labor and materials, a tile project's costs vary by the type of sub-flooring to be used as a foundation for the tile.
Three things can cause an EMI problem: A signal source creates some kind of noise, there is a transmission path for the noise, and/or there is a receiver sensitive enough to be distorted by the noise, as shown in Figure 1.
poor EMI design may be the cause of the problem. Here, it is important to consider component variations. Maybe the components in the prototype are such that no problem is visible, but the components used in production may cause problems. The four coupling mechanisms are: Resistive (or galvanic) coupling: The noise signal is