Abstract: Techniques for transceiving radio frequency (RF) signals through a window of a building are disclosed, the window having a first surface facing an interior of the building. An antenna arrangement is attached to a building structure adjacent the first surface and the antenna arrangement includes one or more radiating elements configured to transceive the RF signals through the window. In some embodiments, the building structure is mullion. In some embodiments a window surface includes an electrochromic and/or low emissivity coating that is excluded from a region proximate to the radiating elements.