Hardware-efficient signal-component separator for outphasing power amplifiers

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United States of America Patent

PATENT NO 9252712
APP PUB NO 20150124907A1
SERIAL NO

14400061

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Abstract

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Described herein is a fixed-point piece-wise linear (FP PWL) approximation technique for computations of nonlinear functions. The technique results in circuit designs having relatively few and simple arithmetic operations, short arithmetic operands and small-sized look-up tables and the circuits resultant there from can be efficiently pipelined to run at multi-GSamples/s throughputs. In one exemplary embodiment, the FP PWL approximation technique was used in the design of an energy-efficient high-throughput and high-precision signal component separator (SCS) for use with in an asymmetric-multilevel-outphasing (AMO) power amplifier. The FP PWL approximation technique is appropriate for use in any application requiring high-throughput, area and power constrained hardware implementations of nonlinear functions.

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Patent Owner(s)

Patent OwnerAddress
MASSACHUSETTS INSTITUTE OF TECHNOLOGY77 MASSACHUSETTS AVENUE CAMBRIDGE MA 02139

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Avniel, Yehuda Cambridge, US 3 75
Li, Yan Cambridge, US 1447 20982
Li, Zhipeng Cambridge, US 51 251
Megretski, Alexandre Concord, US 36 548
Stojanovic, Vladimir Marko Lexington, US 10 149

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