Measurements of Window Penetration Loss and Building Entry Loss from 3.5 to 24 GHz

This paper presents the results of a window penetration loss (WinPL) and building entry loss (BEL) of a traditional office building from 3.5-24 GHz. In order to investigate the factor that most affect BEL frequency-dependence, the WinPL of an on-site window was measured and analyzed using a penetration loss simulation of the double-glazed glass. Both experiments show an oscillatory dependence of the loss on frequency. A cumulative distribution function (CDF) generated from the BEL data at different frequencies was analyzed in terms of depth within the building. As the results, as a receiver (Rx) moved deep inside the building, the BEL increased. For 50 % values extracted from the CDF data, the frequency characteristics of all locations were similar to those of the WPL. As with WinPL, the BEL is high at 6 and 18 GHz, and low at 3.5, 10, and 24 GHz. For the traditional office buildings with double-glazed external windows, the BEL frequency-dependence is directly affected by the WPLs of the windows.