High-Throughput Signal Component Separator for Asymmetric Multi-Level Outphasing Power Amplifiers
作者： Yan Li , Zhipeng Li , Oguzhan Uyar , Yehuda Avniel , Alexandre Megretski
DOI: 10.1109/JSSC.2012.2229071
关键词: Electrical engineering 、 Chip 、 Source separation 、 CMOS 、 Silicon on insulator 、 Amplifier 、 Electronic engineering 、 Integrated circuit design 、 Spectral efficiency 、 Signal processing 、 Computer science
摘要: This paper presents an energy-efficient high-throughput and high-precision signal component separator (SCS) chip design for the asymmetric-multilevel-outphasing (AMO) power amplifier. It uses a fixed-point piece-wise linear functional approximation developed to improve hardware efficiency of outphasing processing functions. The is fabricated in 45 nm SOI CMOS process SCS consumes active area 1.5 mm2. new algorithm enables run at throughput 3.4 GSamples/s producing phases with 12-bit accuracy. Compared traditional low-throughput AMO implementations, 0.8 this improves by 25× energy-efficiency 2×. fastest date class mm-wave base station transmitters that can operate high area, energy spectral efficiency.
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