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http://dx.doi.org/10.5515/KJKIEES.2007.18.7.723

W-CDMA 30 Watts High Power Amplifier Using Anti-Phase Intermodulation Distortion Linearization Technology  

Kang, Won-Tae (Department of Radio Science & Engineering, Kwangwoon University)
Do, Ji-Hoon (Department of Radio Science & Engineering, Kwangwoon University)
Chang, Jeong-Seok (Department of Radio Science & Engineering, Kwangwoon University)
Hong, Ui-Seok (Department of Radio Science & Engineering, Kwangwoon University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.18, no.7, 2007 , pp. 723-730 More about this Journal
Abstract
This paper shows how the ACLR of power amplifier can be reduced by using Anti-phase IMD linearization technique which generate anti-phase IMD in the driver stage compare to output stage's IMD. And design process proposed. From the experimental result of W-CDMA 4FA input signal, this amplifier has ACLR -55 dBc@5 MHz offset at 30 watts average power. Compare to optimum matching technique to get maximum power gain, this technique has been improved ACLR by 12 dBc. Also this amplifier meets 50 watts average output power amplifier specification in domestic market.
Keywords
Anti-Phase; IMD; Linearization; WCDMA; HPA;
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  • Reference
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