RF Power Amplifier Architectures to Support Cellular Infrastructure for 5G and Beyond

Recent advancements in wireless communications have led to the use of spectrally efficient complex modulation schemes, such as quadrature amplitude modulation (QAM) and orthogonal frequency division multiplexing (OFDM), to achieve higher data-rates within a limited spectrum. To support faster communication, channel bandwidths have also increased with each generation of wireless technology, along with the signal’s peak to average power ratio (PAPR). This talk highlights the latest trends in RF power amplifier architectures and design to support the increasing PAPR and bandwidth requirements on cellular infrastructure. Some of the discussed architectures include Doherty, dynamic load modulation, and harmonically terminated (HT) device topologies. The basic theory, recent trends in the various topologies, and combinations of advanced techniques will be examined in detail during this talk.