Accommodating the higher-capacity services opens the way for innovative system architectures in microwave backhaul networks. Dual-polarized antennas double the capacity of the antenna system. Moreover, the superior interference characteristics of ultra-high performance antennas allow the installation of additional antennas on existing sites as new microwave backhaul systems are deployed. Zoberi expects two sections of the E-band spectrum, which are available between 71 and 86GHz, to come into frequent use in 2009. Trial systems have already been deployed. Using 1- or 2-foot antennas, E-band microwave systems provide 200 to 600Mbit/s capacity over distances up to two miles.
According to Zoberi, the growing demand for enhanced wireless data services to be available ‘anytime and anywhere’ is increasing pressure on operators to re-assess their backhaul infrastructure--with higher capacity the key. “For the network operators, the expression ‘time is money’ rings true,” he said. “Quick to install, high-capacity microwave systems offer a flexible and reliable solution to the backhaul dilemma as we embark on the next steps of wireless evolution.”
Perhaps some "Optical Fiber Guys" would like to argue their case for superiority in this area. We're all ears.