High-Throughput Signal Component Separator for Asymmetric Multi-Level Outphasing Power Amplifiers

Autor:	Zhipeng Li, Yehuda Avniel, Vladimir Stojanovic, Yan Li, Oguzhan Uyar, Alexandre Megretski
Rok vydání:	2013
Předmět:	Signal processing Computer science business.industry Amplifier Electrical engineering Silicon on insulator Spectral efficiency Integrated circuit design Chip CMOS Electronic engineering Source separation Electrical and Electronic Engineering business
Zdroj:	IEEE Journal of Solid-State Circuits. 48:369-380
ISSN:	1558-173X 0018-9200
DOI:	10.1109/jssc.2012.2229071
Popis:	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 the hardware efficiency of the outphasing signal processing functions. The chip is fabricated in 45 nm SOI CMOS process and the SCS consumes an active area of 1.5 mm2. The new algorithm enables the SCS to run at a throughput of 3.4 GSamples/s producing the phases with 12-bit accuracy. Compared to traditional low-throughput AMO SCS implementations, at 0.8 GSamples/s this design improves the area efficiency by 25× and the energy-efficiency by 2×. This fastest high-precision SCS to date enables a new class of high-throughput mm-wave and base station transmitters that can operate at high area, energy and spectral efficiency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::12ce7fdb15a28a526879db7c500ae18d https://doi.org/10.1109/jssc.2012.2229071 Zobrazit plný text záznamu