High-Precision Joint In-Band/Out-of-Band Distortion Compensation Scheme for Wideband RF Power Amplifier Linearization

High-Precision Joint In-Band/Out-of-Band Distortion Compensation Scheme for Wideband RF Power Amplifier Linearization

In this letter, a high-precision joint in-band/out-of-band (OOB) distortion compensation scheme is proposed to overcome the large modulated bandwidth issue for wideband radio frequency power amplifier linearization. It is achieved by dividing the linearization process into in-band predistortion and...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters Vol. 28; no. 11; pp. 1044 - 1046
Main Authors: Yu, Chao, Yang, Na, Lu, Qianyun, Cai, Jialin, Zhu, Xiao-Wei
Format: Journal Article
Language:English
Published: IEEE 01-11-2018
Subjects:
Digital predistortion (DPD)
in-band distortion
Intermodulation distortion
out-of-band (OOB) distortion
power amplifier (PA)
Power amplifiers
Predistortion
Radiofrequency amplifiers
Wideband
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Summary:In this letter, a high-precision joint in-band/out-of-band (OOB) distortion compensation scheme is proposed to overcome the large modulated bandwidth issue for wideband radio frequency power amplifier linearization. It is achieved by dividing the linearization process into in-band predistortion and OOB suppression, respectively. Experimental results have proven that high-accuracy compensation can be realized by this scheme and the required bandwidth of the in-band and OOB distortion can be controlled flexibly, leading to significant reduction of the system bandwidth requirements.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2018.2867094