Abstract: High data rate 5G systems are expected to operate at frequencies between 15GHz and 100GHz, and utilize large numbers of antennas in both base-stations and handsets. Representative power amplifier scenarios differ from those in commercial wireless today: there will be many more power amplifiers operating at much low power levels. Yet signal peak-to-average ratios will remain high, and efficiency will remain a critical consideration. Doherty amplifiers will be a prime contender for these applications, although they are not the only possibility. This paper reviews the emerging requirements for power amplifiers in mm-wave 5G systems, describes the status of mm-wave Doherty ICs in different device technologies, lists challenges for amplifier designs, and provides a glimpse of approaches other than Doherty amplifiers to meet the needs.
Publication Year: 2016
Publication Date: 2016-05-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 49
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