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改善放大器三阶交调失真的一种方法 被引量:7

A Method of Third-order Intermodulation Reduction in RF Amplifiers
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摘要 提出一种降低放大器三阶交调失真的方法。信号注入二极管电路引起失真 ,然后经过主放大器 ,又将一个新的频率分量注入到二极管和主放大器中 ,最终抵消掉部分三阶交调分量 ,使放大器线性化。不同于其他方法的是 ,这种方法不需要可变增益放大器、可变衰减器等复杂的电路器件。最后给出了双频激励测试的结果 ,结果表明此方法运用于工作在 85 0 MH z的 MESFET放大器中 ,使放大器的三阶交调分量降低了 2 6d This letter presents a technique for the reduction of thirdorder intermodulation distortion in RF amplifiers Baseband predistortion signal is injected into a diode circuitry and the main amplifier to mixed with the fundamental to generate a canceling signal for the suppression of the inherent IMD component Unlike many other techniques, no RF circuitry, such as variable gain amplifiers and variable attenuator is needed,and twotone test result is included in the end This technique reduced the IM3 level by 26 dBm in a MESFET amplifier at 850 MHz
出处 《现代电子技术》 2004年第21期109-110,共2页 Modern Electronics Technique
关键词 三阶交调 预失真 放大器 二极管 thirdorder intermodulation predistortion amplifier diode
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参考文献7

  • 1C W Fan,K K M Cheng.Theoretical and Experimental Study of Amplifier Linearization Based on Harmonic and Baseband Signal Injection Technique.IEEE Transactions on Microwave Theory and Techniques,Vol.50,No.7,July 2002.
  • 2P B Kenington.High-Linearity RF Amplifier Design,Norwood,MA,Artech House,2000.
  • 3S A Maas.Nonliear Microwave Circuits.Norwood,MA,Artech House,1998.
  • 4C S Aitchison,M Mbsbele,M R Moazzam,et al.Improvement of Third-Order Intermodulation Product of RF and Microwave Amplifiers by Injection.IEEE Transactions on Microwave Theory and Techniques,Vol.49,No.6,June 2001.
  • 5K Yamauchi,K Mori,M Nakayama,et al.A Novel Series Ddiode Linearizer for Mobile Radio Power Amplifiers.IEEE MTT-S Int.Microwave Sympo.Dig.,Vol.2,pp.831-834,1996.
  • 6C W Fan,K K M Cheng.Amplifier Linearization Using Simultaneous Harmonic and Baseband Injection.IEEE Microwave and Wireless Components Lett.,Vol.11,No.10,pp.404-406,Oct 2001.
  • 7Y Yang,B Kim.A new Linear Amplifier Using Low-Frequency Second-Order Intermodulation Component Feedforwarding.IEEE Microwave and Guide Wave Lett.,Vol.9,No.10,pp.419-421,Oct 1999.

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