Innovations in base station design are driving revenue growth in tower-top radiofrequency electronics, with the market expected to exceed $4.5 billion by 2017, according to ABI Research. The RF electronics of a typical base station design are undergoing significant modernization in the form of tower-mounted amplifiers (TMAs), remote radio heads (RRHs) and active antennas. At the same time, the rollout of LTE will increase the importance of tower-top active RF electronics over the next few years, said Lance Wilson, research director for mobile networks at ABI. For more, see this ABI release