Wideband Envelope Tracking Power Amplifiers With Reduced Bandwidth Power Supply Waveforms and Adaptive Digital Predistortion Techniques

2009 ◽  
Vol 57 (12) ◽  
pp. 3307-3314 ◽  
Author(s):  
Jinseong Jeong ◽  
D.F. Kimball ◽  
Myoungbo Kwak ◽  
Chin Hsia ◽  
P. Draxler ◽  
...  
Keyword(s):  
Power Supply ◽  
Power Amplifiers ◽  
Digital Predistortion ◽  
Envelope Tracking

A Dual-Input Two-Box Model for Digital Predistortion of Envelope Tracking Power Amplifiers

2016 ◽  
Vol 26 (5) ◽  
pp. 361-363 ◽  
Author(s):  
Oualid Hammi ◽  
Mohamed O. Khalifa ◽  
Abubaker Abdelhafiz ◽  
Andrew Kwan ◽  
Azzedine Zerguine ◽  
...  
Keyword(s):  
Power Amplifiers ◽  
Box Model ◽  
Digital Predistortion ◽  
Envelope Tracking

scholarly journals Computationally efficient real-time digital predistortion architectures for envelope tracking power amplifiers

2013 ◽  
Vol 5 (2) ◽  
pp. 187-193 ◽  
Author(s):  
Pere L. Gilabert ◽  
Gabriel Montoro
Keyword(s):  
Real Time ◽  
Power Amplifiers ◽  
Field Programmable Gate Array ◽  
Nonlinear Distortion ◽  
Supply Voltage ◽  
Digital Predistortion ◽  
Computationally Efficient ◽  
Envelope Tracking ◽  
Field Programmable ◽  
Voltage Signal

This paper presents and discusses two possible real-time digital predistortion (DPD) architectures suitable for envelope tracking (ET) power amplifiers (PAs) oriented at a final computationally efficient implementation in a field programmable gate array (FPGA) device. In ET systems, by using a shaping function is possible to modulate the supply voltage according to different criteria. One possibility is to use slower versions of the original RF signal's envelope in order to relax the slew-rate (SR) and bandwidth (BW) requirements of the envelope amplifier (EA) or drain modulator. The nonlinear distortion that arises when performing ET with a supply voltage signal that follows both the original and the slow envelope will be presented, as well as the DPD function capable of compensating for these unwanted effects. Finally, two different approaches for efficiently implementing the DPD functions, a polynomial-based and a look-up table-based, will be discussed.

Memory models for behavioral modeling and digital predistortion of envelope tracking power amplifiers

2015 ◽  
Vol 39 (8) ◽  
pp. 879-888 ◽  
Author(s):  
Felice Francesco Tafuri ◽  
Daniel Sira ◽  
Troels Studsgaard Nielsen ◽  
Ole Kiel Jensen ◽  
Jan Hvolgaard Mikkelsen ◽  
...  
Keyword(s):  
Power Amplifiers ◽  
Memory Models ◽  
Behavioral Modeling ◽  
Digital Predistortion ◽  
Envelope Tracking

A digital predistortion assisted hybrid supply modulator for envelope tracking power amplifiers

Integration ◽  
2016 ◽  
Vol 52 ◽  
pp. 282-290 ◽  
Author(s):  
Atefeh Salimi ◽  
Rasoul Dehghani ◽  
Abdolreza Nabavi
Keyword(s):  
Power Amplifiers ◽  
Digital Predistortion ◽  
Envelope Tracking

Digital Predistortion for Envelope-Tracking Power Amplifiers Using Decomposed Piecewise Volterra Series

2008 ◽  
Vol 56 (10) ◽  
pp. 2237-2247 ◽  
Author(s):  
Anding Zhu ◽  
P.J. Draxler ◽  
Chin Hsia ◽  
T.J. Brazil ◽  
D.F. Kimball ◽  
...  
Keyword(s):  
Power Amplifiers ◽  
Volterra Series ◽  
Digital Predistortion ◽  
Envelope Tracking
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