Shielding strategies for interference mitigation in indoor wireless communications with frequency selective surfaces

The effectiveness of shielding walls between adjacent rooms to create radio separation between WLAN systems is evaluated experimentally. Shielding only the dividing wall may not be sufficient as reflected and diffracted energy leaks via doors and windows. Measurements show that, at 5.8 GHz and 2.8 GHz, attenuations of 35 dB and 28 dB, respectively, are required if screens (such as frequency selective surfaces) are to limit the energy of the direct path below 10% of the diffracted leakage energy.