| W-CDMA手机用功率放大器的ACPR不对称性研究 |
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| 引用本文： | 肖婷婷, 阎跃鹏, 李志强, 李井龙, 于进勇,. W-CDMA手机用功率放大器的ACPR不对称性研究[J]. 电子器件, 2007, 30(5): 1898-1901 |
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| 作者姓名： | 肖婷婷 阎跃鹏 李志强 李井龙 于进勇 |
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| 作者单位： | 中国科学院微电子研究所,北京,100029 |
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| 摘 要： | 分析了偶次交调产生的低频因素对临近通道泄漏功率比(ACPR)不对称性的影响;根据实际功率放大器结构提出了一种等效低通滤波器模型;仿真验证了该低通滤波器的带宽和阶数对ACPR不对称性的影响;测试中通过改变该低通滤波器的带宽和阶数,使得ACPR不对称性改善了3.72dB,同时ACPR降低了2.95dB,提高了功放的线性度.
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| 关 键 词： | W-CDMA ACPR不对称性 低频因素 |
| 文章编号： | 1005-9490(2007)05-1898-04 |
| 修稿时间： | 2006-12-19 |
Research on ACPR Asymmetry of Power Amplifier Used for W-CDMA Handset |
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| XIAO Ting-ting,YAN Yue-peng,LI Zhi-qiang,LI Jing-long,YU Jin-yong. Research on ACPR Asymmetry of Power Amplifier Used for W-CDMA Handset[J]. Journal of Electron Devices, 2007, 30(5): 1898-1901 |
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| Authors: | XIAO Ting-ting YAN Yue-peng LI Zhi-qiang LI Jing-long YU Jin-yong |
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| Affiliation: | Institute of Microelectronics; The Chinese Academy of Sciences; Beijing 100029; China |
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| Abstract: | The influence of low frequency factors created by the even order distortion to the adjacent channel power ratio(ACPR) asymmetry is analyzed.An equivalent low pass filter model is presented according to the actual power amplifier structure.We simulated and confirmed the influences of the band and order of the low pass filter to the ACPR asymmetry.In the test,the ACPR asymmetry was improved by 3.72 dB and the ACPR was decreased by 2.95 dB through changing the band and order of the low pass filter.The linearity of the power amplifier was improved. |
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| Keywords: | W-CDMA ACPR asymmetry low frequency factors |
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