Linear power amplifier and method for removing intermodulation distortion with predistortion system and feed forward system
 A linear power amplifier and method for removing the intermodulation distortion with a predistortion system and a feed forward system. The linear power amplifier having a main power amplifier includes: a predistortion system for firstly suppressing the intermodulation signal generated upon amplification of an RF signal in the main power amplifier, by generating a harmonics corresponding to the input RF signal and a predistortion signal with coupling the RF signal to the harmonics; and a feed forward system for secondly suppressing the intermodulation signal by canceling the input RF signal and the output of the main power amplifier, extracting an intermodulation signal distortion, error-amplifying the extracted intermodulation signal distortion, and coupling the amplified intermodulation signal with the output of the main power amplifier. 
SamSung Electronics Co., Ltd.
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inventional inventional additional inventional
Young Ik-Soo Chul-Dong Young-Kon Jong-Tae Seung-Won Seong-Hoon Hong-Kee Soon-Chul
Kim Chang Kim Lee Park Chung Lee Kim Jeong