Wi-Fi Transmission And Multi-Band Shielding Using Single-Layer Frequency Selective Surface

Presented here a Frequency Selective Surface FSS that attenuates the cellular phone signals of 0.8, 0.9, 1.8 and 1.9 GHz bands, but transmits the Wi-Fi 2.45 GHz signals. It consists of two co-centric rings printed over a float-glass and can be used to isolate the intensive care rooms of hospitals from mobile phone calls, yet it supports Wi-Fi feature, enabling doctors to share the confidential medical reports to communicate with outside world.