Presentation 2003/2/27
Nonlinearity Compensation with Adaptive Predistorter for an Amplifier Affected by Even-order Distortion
Hiroko KAWAGUCHI, Yoshihiko AKAIWA,
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Abstract(in English) When modulated signals are applied to an amplifier which shows nonlinearity, odd-order distortions appear at the carrier frequency. On the other hand, even-order distortions appear at harmonic bands and at baseband. If the inpedance of the drain bias circuit at baseband is high, bias voltage is modulated by the even-order distortion. Therefore new odd-order distortion appears at the carrier frequency. In this case, out-of-band radiation power is not suppressed well with an adaptive predistorter which copes with only odd-order distortions. This paper shows a model of amplifier affected by the even-order distortion. We propose an adaptive predistorter which copes with the even-order distortion.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Power Amplifier / Intermodulation Distortion / Even-order Distortion / Nonlinearity Compensation / Adaptive Predistorter
Paper # MoMuC2002-126,SST2002-101,A・P2002-200,RCS202-317,MW2002-208
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Committee MoMuC
Conference Date 2003/2/27(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Nonlinearity Compensation with Adaptive Predistorter for an Amplifier Affected by Even-order Distortion
Sub Title (in English)
Keyword(1) Power Amplifier
Keyword(2) Intermodulation Distortion
Keyword(3) Even-order Distortion
Keyword(4) Nonlinearity Compensation
Keyword(5) Adaptive Predistorter
1st Author's Name Hiroko KAWAGUCHI
1st Author's Affiliation Graduate School of Information Science and Electrical Engineering, Kyushu University()
2nd Author's Name Yoshihiko AKAIWA
2nd Author's Affiliation Graduate School of Information Science and Electrical Engineering, Kyushu University
Date 2003/2/27
Paper # MoMuC2002-126,SST2002-101,A・P2002-200,RCS202-317,MW2002-208
Volume (vol) vol.102
Number (no) 678
Page pp.pp.-
#Pages 4
Date of Issue