@inproceedings{17ec88589d7644a39e39bce76e46a740,
title = "Linearity improvement of power amplifier using modulation of low frequency IMD signals",
abstract = "In this paper, a new predistortion linearizer for controlling the amplitude of low frequency intermodulation distortion signals is proposed. The low frequency intermodulation distortion(IMD) components are generated by harmonic generator. A vector modulator, modulate fundamental signal with low frequency IMD signals, generates predistortion IMD signals and controls amplitude and phase of them with modulation factors. As a result, this predistorter is suppressed IMD signals of power amplifier effectively. The predistortion linearizer has been manufactured to operate in cellular base-station transmitting band (869-894MHz). The experimental results show that IMD 3 of power amplifier are improved more than 20dB for CW two-tone signals. Also, it's improved the adjacent channel power ratio (ACPR) more than 10dB for CDMA (IS-95) signals.",
keywords = "Intermodulation distortion, Linearization, Power amplifier, Predistorter",
author = "Jang, \{Mi Ae\} and Kim, \{Sung Yong\} and Jeon, \{Ki Kyung\} and Young Kim and Jeong, \{Yong Chae\}",
year = "2005",
doi = "10.1109/APMC.2005.1606482",
language = "English",
isbn = "078039433X",
series = "Asia-Pacific Microwave Conference Proceedings, APMC",
booktitle = "APMC 2005",
note = "APMC 2005: Asia-Pacific Microwave Conference 2005 ; Conference date: 04-12-2005 Through 07-12-2005",
}