F1: Advanced transmitters for wireless infrastructure

Digital cellular standards have emerged over the past 20 years. As a consequence modern cellular handheld radios make use of highly digitized transceiver architectures. This is in contrast to wireless infrastructure systems where nowadays still traditional analog-intensive radio architecture concepts are used, partly owing to more demanding performance requirements. However, future wireless infrastructures will move to more flexible and digitally-intensive architectures to address the increasing number of standards, modes and bands in cellular communication.