ACPR Improvement Limitations of Predistortion Linearizer for Nonlinear RF Power Amplifiers

Hyunchul KU; Kang-Yoon LEE; Young Beom KIM

doi:10.1093/ietele/e89-c.4.466

ACPR Improvement Limitations of Predistortion Linearizer for Nonlinear RF Power Amplifiers

Hyunchul KU, Kang-Yoon LEE, Young Beom KIM

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This paper investigates limitations of adjacent channel power ratio (ACPR) improvement in predistortion (pre-D) linearizer used with nonlinear RF power amplifiers (PAs) when the PA model is not perfectly acquired in pre-D design. The error between the physical PA and the nonlinear model is expanded by pre-D function and its power spectral density (PSD) works as limitations in ACPR improvement of the pre-D linearizer. An analytical estimation of ACPR limitations in RF PAs driven by digitally modulated input signal is derived using a formulation of autocorrelation function. The analysis technique is validated with the example of the memory polynomial PA model with the quasi-memoryless pre-D linearizer. The technique is also verified by comparing predicted ACPR limitation with measured limitation for a RF PA with 802.11g input signal.

Publication: IEICE TRANSACTIONS on Electronics Vol.E89-C No.4 pp.466-472

Publication Date: 2006/04/01

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Online ISSN: 1745-1353

DOI: 10.1093/ietele/e89-c.4.466

Type of Manuscript: Special Section PAPER (Special Section on Advanced RF Technologies for Compact Wireless Equipment and Mobile Phones)

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Hyunchul KU, Kang-Yoon LEE, Young Beom KIM, "ACPR Improvement Limitations of Predistortion Linearizer for Nonlinear RF Power Amplifiers" in IEICE TRANSACTIONS on Electronics, vol. E89-C, no. 4, pp. 466-472, April 2006, doi: 10.1093/ietele/e89-c.4.466.
Abstract: This paper investigates limitations of adjacent channel power ratio (ACPR) improvement in predistortion (pre-D) linearizer used with nonlinear RF power amplifiers (PAs) when the PA model is not perfectly acquired in pre-D design. The error between the physical PA and the nonlinear model is expanded by pre-D function and its power spectral density (PSD) works as limitations in ACPR improvement of the pre-D linearizer. An analytical estimation of ACPR limitations in RF PAs driven by digitally modulated input signal is derived using a formulation of autocorrelation function. The analysis technique is validated with the example of the memory polynomial PA model with the quasi-memoryless pre-D linearizer. The technique is also verified by comparing predicted ACPR limitation with measured limitation for a RF PA with 802.11g input signal.
URL: https://globals.ieice.org/en_transactions/electronics/10.1093/ietele/e89-c.4.466/_p

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@ARTICLE{e89-c_4_466,
author={Hyunchul KU, Kang-Yoon LEE, Young Beom KIM, },
journal={IEICE TRANSACTIONS on Electronics},
title={ACPR Improvement Limitations of Predistortion Linearizer for Nonlinear RF Power Amplifiers},
year={2006},
volume={E89-C},
number={4},
pages={466-472},
abstract={This paper investigates limitations of adjacent channel power ratio (ACPR) improvement in predistortion (pre-D) linearizer used with nonlinear RF power amplifiers (PAs) when the PA model is not perfectly acquired in pre-D design. The error between the physical PA and the nonlinear model is expanded by pre-D function and its power spectral density (PSD) works as limitations in ACPR improvement of the pre-D linearizer. An analytical estimation of ACPR limitations in RF PAs driven by digitally modulated input signal is derived using a formulation of autocorrelation function. The analysis technique is validated with the example of the memory polynomial PA model with the quasi-memoryless pre-D linearizer. The technique is also verified by comparing predicted ACPR limitation with measured limitation for a RF PA with 802.11g input signal.},
keywords={},
doi={10.1093/ietele/e89-c.4.466},
ISSN={1745-1353},
month={April},}

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TY - JOUR
TI - ACPR Improvement Limitations of Predistortion Linearizer for Nonlinear RF Power Amplifiers
T2 - IEICE TRANSACTIONS on Electronics
SP - 466
EP - 472
AU - Hyunchul KU
AU - Kang-Yoon LEE
AU - Young Beom KIM
PY - 2006
DO - 10.1093/ietele/e89-c.4.466
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E89-C
IS - 4
JA - IEICE TRANSACTIONS on Electronics
Y1 - April 2006
AB - This paper investigates limitations of adjacent channel power ratio (ACPR) improvement in predistortion (pre-D) linearizer used with nonlinear RF power amplifiers (PAs) when the PA model is not perfectly acquired in pre-D design. The error between the physical PA and the nonlinear model is expanded by pre-D function and its power spectral density (PSD) works as limitations in ACPR improvement of the pre-D linearizer. An analytical estimation of ACPR limitations in RF PAs driven by digitally modulated input signal is derived using a formulation of autocorrelation function. The analysis technique is validated with the example of the memory polynomial PA model with the quasi-memoryless pre-D linearizer. The technique is also verified by comparing predicted ACPR limitation with measured limitation for a RF PA with 802.11g input signal.
ER -