A wide dynamic range analog predistortion-type linearizer using self-cancellation scheme

Ki Hyuk Kim; Gyoung Bum Kim; Sung Woo Hwang; Seung Hee Lee; Doyeol Ahn

doi:10.1109/LMWC.2005.856681

A wide dynamic range analog predistortion-type linearizer using self-cancellation scheme

Ki Hyuk Kim, Gyoung Bum Kim, Sung Woo Hwang, Seung Hee Lee, Doyeol Ahn

School of Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

A new radio frequency linearized power amplifier (LPA) system for wideband-code-division-multiple-access (WCDMA) application is demonstrated. The main amplifier is a parallel combination of drive amplifiers, and the same type of drive amplifier is also used to generate the predistortion signal. Self-cancellation of the intermodulation-distortion (IMD) components is obtained by the generic identity between the nonlinear characteristics of the main amplifier and the predistortion signal, both of which are originated from the same type of devices. Such self-cancellation scheme exhibits the improvement of 13 dB in the adjacent channel leakage ratio (ACLR) for WCDMA signal excitation.

Original language	English
Pages (from-to)	661-663
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	15
Issue number	10
DOIs	https://doi.org/10.1109/LMWC.2005.856681
State	Published - Oct 2005

Keywords

Intermodulation-distortion (IMD) products
Linearization
Linearized-power-amplifier (LPA)
Power-amplifier (PA)
Predistortion

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10.1109/LMWC.2005.856681

Cite this

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title = "A wide dynamic range analog predistortion-type linearizer using self-cancellation scheme",

abstract = "A new radio frequency linearized power amplifier (LPA) system for wideband-code-division-multiple-access (WCDMA) application is demonstrated. The main amplifier is a parallel combination of drive amplifiers, and the same type of drive amplifier is also used to generate the predistortion signal. Self-cancellation of the intermodulation-distortion (IMD) components is obtained by the generic identity between the nonlinear characteristics of the main amplifier and the predistortion signal, both of which are originated from the same type of devices. Such self-cancellation scheme exhibits the improvement of 13 dB in the adjacent channel leakage ratio (ACLR) for WCDMA signal excitation.",

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AU - Ahn, Doyeol

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AB - A new radio frequency linearized power amplifier (LPA) system for wideband-code-division-multiple-access (WCDMA) application is demonstrated. The main amplifier is a parallel combination of drive amplifiers, and the same type of drive amplifier is also used to generate the predistortion signal. Self-cancellation of the intermodulation-distortion (IMD) components is obtained by the generic identity between the nonlinear characteristics of the main amplifier and the predistortion signal, both of which are originated from the same type of devices. Such self-cancellation scheme exhibits the improvement of 13 dB in the adjacent channel leakage ratio (ACLR) for WCDMA signal excitation.

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A wide dynamic range analog predistortion-type linearizer using self-cancellation scheme

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Keywords

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