A design of predistortion linearizer using 2nd order low frequency intermodulation signal injection

Young Pil Kwon; Yong Chae Jeong; Young Kim; Chu Dong Kim

doi:10.1109/EUMC.2003.1262266

A design of predistortion linearizer using 2^nd order low frequency intermodulation signal injection

Young Pil Kwon
, Yong Chae Jeong
, Young Kim
, Chu Dong Kim

Division of Electronic Engineering

Research output: Contribution to conference › Conference paper › peer-review

5 Scopus citations

Abstract

This paper presents a new predistortion method which injects the 2 ^nd order low frequency intermodulation signal of the RF signal into the input bias line of the amplifier. We show this technique can suppress the 3^rd IM and the 5^th IM apparently by adjusting 2 factors, phase and amplitude, through mathematical analysis, and then confirm it with simulation. Also, we design a digital cellular amplifier to show variation of the optimal performance without additional circuits or controls for the operating range. When the input signal CDMA IS-95 1FA was applied, measured ACPR improvements were 25 dBc, 22.5 dBc, and 6 dBc at 0.855 MHz, 1.25 MHz, and 2.25 MHz offset respectively. Also, when applying the CDMA IS-95 3FA, the measured ACPR improvement showed 16 dBc at 0.885 MHz offset.

Original language	English
Title of host publication	Conference Proceedings - 33rd European Microwave Conference, EuMC 2003
Publisher	IEEE Computer Society
Pages	249-252
Number of pages	4
ISBN (Print)	1580538347, 9781580538343
DOIs	https://doi.org/10.1109/EUMC.2003.1262266
State	Published - 2003
Event	33rd European Microwave Conference, EuMC 2003 - Munich, Germany Duration: 2003.10.7 → 2003.10.7

Publication series

Name	Conference Proceedings - 33rd European Microwave Conference, EuMC 2003
Volume	1

Conference

Conference	33rd European Microwave Conference, EuMC 2003
Country/Territory	Germany
City	Munich
Period	03.10.7 → 03.10.7

Quacquarelli Symonds(QS) Subject Topics

Computer Science & Information Systems
Engineering - Electrical & Electronic
Engineering - Petroleum

Access to Document

10.1109/EUMC.2003.1262266

Cite this

Kwon, Y. P., Jeong, Y. C., Kim, Y., & Kim, C. D. (2003). A design of predistortion linearizer using 2^nd order low frequency intermodulation signal injection. In Conference Proceedings - 33rd European Microwave Conference, EuMC 2003 (pp. 249-252). Article 1262266 (Conference Proceedings - 33rd European Microwave Conference, EuMC 2003; Vol. 1). IEEE Computer Society. https://doi.org/10.1109/EUMC.2003.1262266

@inproceedings{daecc4eacfd14e10b8f7e322708fbd0e,

title = "A design of predistortion linearizer using 2nd order low frequency intermodulation signal injection",

abstract = "This paper presents a new predistortion method which injects the 2 nd order low frequency intermodulation signal of the RF signal into the input bias line of the amplifier. We show this technique can suppress the 3rd IM and the 5th IM apparently by adjusting 2 factors, phase and amplitude, through mathematical analysis, and then confirm it with simulation. Also, we design a digital cellular amplifier to show variation of the optimal performance without additional circuits or controls for the operating range. When the input signal CDMA IS-95 1FA was applied, measured ACPR improvements were 25 dBc, 22.5 dBc, and 6 dBc at 0.855 MHz, 1.25 MHz, and 2.25 MHz offset respectively. Also, when applying the CDMA IS-95 3FA, the measured ACPR improvement showed 16 dBc at 0.885 MHz offset.",

author = "Kwon, \{Young Pil\} and Jeong, \{Yong Chae\} and Young Kim and Kim, \{Chu Dong\}",

year = "2003",

doi = "10.1109/EUMC.2003.1262266",

language = "English",

isbn = "1580538347",

series = "Conference Proceedings - 33rd European Microwave Conference, EuMC 2003",

publisher = "IEEE Computer Society",

pages = "249--252",

booktitle = "Conference Proceedings - 33rd European Microwave Conference, EuMC 2003",

note = "33rd European Microwave Conference, EuMC 2003 ; Conference date: 07-10-2003 Through 07-10-2003",

}

Kwon, YP, Jeong, YC, Kim, Y & Kim, CD 2003, A design of predistortion linearizer using 2^nd order low frequency intermodulation signal injection. in Conference Proceedings - 33rd European Microwave Conference, EuMC 2003., 1262266, Conference Proceedings - 33rd European Microwave Conference, EuMC 2003, vol. 1, IEEE Computer Society, pp. 249-252, 33rd European Microwave Conference, EuMC 2003, Munich, Germany, 03.10.7. https://doi.org/10.1109/EUMC.2003.1262266

A design of predistortion linearizer using 2^nd order low frequency intermodulation signal injection. / Kwon, Young Pil; Jeong, Yong Chae; Kim, Young et al.
Conference Proceedings - 33rd European Microwave Conference, EuMC 2003. IEEE Computer Society, 2003. p. 249-252 1262266 (Conference Proceedings - 33rd European Microwave Conference, EuMC 2003; Vol. 1).

Research output: Contribution to conference › Conference paper › peer-review

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N2 - This paper presents a new predistortion method which injects the 2 nd order low frequency intermodulation signal of the RF signal into the input bias line of the amplifier. We show this technique can suppress the 3rd IM and the 5th IM apparently by adjusting 2 factors, phase and amplitude, through mathematical analysis, and then confirm it with simulation. Also, we design a digital cellular amplifier to show variation of the optimal performance without additional circuits or controls for the operating range. When the input signal CDMA IS-95 1FA was applied, measured ACPR improvements were 25 dBc, 22.5 dBc, and 6 dBc at 0.855 MHz, 1.25 MHz, and 2.25 MHz offset respectively. Also, when applying the CDMA IS-95 3FA, the measured ACPR improvement showed 16 dBc at 0.885 MHz offset.

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