| Presentation | 2011-05-27 Effect of Analog Predistortion Linearizer in Quasi Saturation Region of RF Power Amplifier Xi CHEN, Yasushi YAMAO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Analog predistorter is a low-cost solution which can moderately compensate for the weak nonlinearity of radio frequency (RF) power amplifier (PA) for mobile communication systems. In this paper, we propose to use an analog predistorter to compensate medium-level nonlinearity of PA in quasi-saturation region. In order to model the complicated nonlinearity in quasi-saturation region, the Rapp model is employed to fit both the ideal clipping device and FET device represented by Curtice FET model. The linearizer we employed is series-diode configured type, which can optimize the linearization performance by controlling the bias voltage of the diode. From simulation results, the third-order inter-modulation distortion ratio (IMD3) can be reduced by -10 dB on average when a two-tone signal is input. It is also concluded that the predistorter can effectively decrease the out of band emission in Orthogonal Frequency Division Multiplexing (OFDM) signal. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Diode linearizer / power amplifier / predistortion / inter-modulation / OFDM |
| Paper # | EMCJ2011-31,MW2011-28,EST2011-24 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2011/5/19(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of Analog Predistortion Linearizer in Quasi Saturation Region of RF Power Amplifier |
| Sub Title (in English) | |
| Keyword(1) | Diode linearizer |
| Keyword(2) | power amplifier |
| Keyword(3) | predistortion |
| Keyword(4) | inter-modulation |
| Keyword(5) | OFDM |
| 1st Author's Name | Xi CHEN |
| 1st Author's Affiliation | Dept. Information & Communication Engineering, Harbin Engineering University() |
| 2nd Author's Name | Yasushi YAMAO |
| 2nd Author's Affiliation | Advanced Wireless Communication Research Center, The University of Electro-Communications |
| Date | 2011-05-27 |
| Paper # | EMCJ2011-31,MW2011-28,EST2011-24 |
| Volume (vol) | vol.111 |
| Number (no) | 65 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |