Analog predistortion linearizer for high power rf amplifier

Analog predistortion linearizer for high power rf amplifier

Analog predistortion linearizer for the high power amplifier of CDMA base station has been developed. To suppress the spectral regrowth in the adjacent channel effectively, the odd order intermodulation distortions should be cancelled. For the purpose, the predistorter, which can cancel the 3rd and...

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Bibliographische Detailangaben
Hauptverfasser: Yi, Jaehyok, Yang, Youngoo, Park, Myungkyu, Kang, Wonwoo, Kim, Bumman
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bandwidth
Base stations
Circuits
Distortion measurement
High power amplifiers
Intermodulation distortion
Multiaccess communication
Phase measurement
Predistortion
Radiofrequency amplifiers
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Beschreibung
Zusammenfassung:Analog predistortion linearizer for the high power amplifier of CDMA base station has been developed. To suppress the spectral regrowth in the adjacent channel effectively, the odd order intermodulation distortions should be cancelled. For the purpose, the predistorter, which can cancel the 3rd and 5th intermodulation distortions independently, has been employed. The implemented pre-distorter linearized the RF amplifier with average power 45 dBm at 2.37-2.4 GHz band. 9 dB suppression of spectral regrowth was achieved for CDMA signal over 30 MHz bandwidth.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2000.862262