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W-CDMA手机用功率放大器的ACPR不对称性研究

Research on ACPR Asymmetry of Power Amplifier Used for W-CDMA Handset
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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. 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 linearit...
作者 肖婷婷 阎跃鹏 李志强 李井龙 于进勇
机构地区 中国科学院微电子研究所
出处 《电子器件》 CAS 2007年第5期1898-1901,共4页 Chinese Journal of Electron Devices
关键词 W-CDMA ACPR不对称性 低频因素 W-CDMA ACPR asymmetry low frequency factors
分类号 TN722.75 [电子电信—电路与系统]
  • 相关文献

参考文献6

  • 1[2]Cripps Steve C,RF Power Amplifiers for Wireless Communications[M].Artech House,1999,219-282.
  • 2[3]Chen Wei-Chien,Tsai Jeng-Han,Chen Shih-Yu,Huang Tian-Wei.ACPR and IM3R Correlation of Broadband Signals in Microwave and Millimeter Wave Frequencies[C]//IEEE International Workshop on Radio-Frequency Integration Technology,Dec 02,2005,30:150-152.
  • 3[4]mizuta S,Suzuki Y,Narahashi S,Yamao Y,A New Adjustment Method for the Frequency-Dependent IMD Compensator of the Digital Predistortion Linearizer[C]//Radio and Wireless Symposium,2006,255-258.
  • 4李井龙,阎跃鹏.W-CDMA手机用功放的临道泄漏的低频因素分析[J].电子器件,2006,29(2):476-479. 被引量：1
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  • 6[7]de Carvalho Nuno Borges,José Carlos Pedro,A Comprehensive Explanation of Distortion Sideband Asymmetries[J].IEEE Transactions on Microwave Theory and Techniques,2002,50:2090-2101.

二级参考文献7

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电子器件
2007年 第5期

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