A Frequency Selective Wi-Fi Blocking Wallpaper: Real-World Measurements and Design Improvements

We present the real-world measurements of a frequency selective Wi-Fi blocking wallpaper made by screen printing and curing conductive ink on a commercial wallpaper substrate. Based on the results of the real-world measurements, the FSS design is modified in order to provide a higher bandwidth in the 5G Wi-Fi band, which will enable a more consistent blocking of the Wi-Fi signal over both bands.