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Lin Qiang, Zhang Zu Ying and Guo Wei; Air Force Radar Academy and Huazhong University of Science and Technology

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Design of a Feedback Predistortion Linear Power Amplifier

A new feedback predistortion linearizing method is proposed and analyzed. This method extracts the third-order intermodulation distortion (IMD) signal from the main power amplifier (PA) output signal and the original input signal and uses it as the pre...

May 14, 2005

Lin Qiang, Zhang Zu Ying and Guo Wei; Air Force Radar Academy and Huazhong University of Science and Technology

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Mobile communication systems currently use multi-carrier/multi-channel schemes for effective use of the frequency spectrum resources. The intermodulation has a serious impact on these communication systems in terms of adjacent channel interference, resulting in an increase of bit error rates. As the power amplifier operates close to the saturation region...