The high targets of 5G networks require a number of new technology components. This chapter presents an overview of the main new technologies in 5G compared to Long Term Evolution. It is divided into spectrum utilization, beamforming, physical layer and protocols, network slicing, dual connectivity, and new architecture with radio cloud and edge computing. Beamforming is an attractive solution for boosting mobile network performance. It can provide higher spectral efficiency, which adds a lot more capacity to the existing base station sites. An active antenna enables practical beamforming implementation when the phasing of the small power amplifiers can be controlled with digital processing. 5G radio design requires enhanced flexibility in the physical layer and in the protocols. 5G networks are designed to support very diverse and extreme requirements for latency, throughput, capacity, and availability. Network slicing offers a solution to meet the requirements of all use cases in a common network infrastructure.