Millimeter wave line-of-sight digital radio at 38 GHz

Point-to-point digital millimeter wave radios are being increasingly deployed because of the rapid expansion of commercial wireless services. Providers of wireless services continue to demand systems with higher data rates and higher carrier frequencies. The first valuable niche market, where millimeter radio fits in, is the backbone network at 23 GHz, 26 GHz, 38 GHz and 55 GHz for the 0.9 or 1.8 GHz GSM type cellular telephone network. Wireless broadband networks at 28 GHz and 42 GHz is the second valuable niche market for millimeter wave radios. For an example, a total requirement of 16,000 38 GHz radios is estimated to be necessary for the German DCS 1800 mobile telephone network, Eplus, at the end of the installation in 1998