留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

一种用于预失真线性化器的宽带匹配技术

汪永飞 韩培胜 胡卿 陈欣鹏 周东方

汪永飞, 韩培胜, 胡卿, 等. 一种用于预失真线性化器的宽带匹配技术[J]. 强激光与粒子束, 2019, 31: 123003. doi: 10.11884/HPLPB201931.190128
引用本文: 汪永飞, 韩培胜, 胡卿, 等. 一种用于预失真线性化器的宽带匹配技术[J]. 强激光与粒子束, 2019, 31: 123003. doi: 10.11884/HPLPB201931.190128
Wang Yongfei, Han Peisheng, Hu Qing, et al. Wideband matching technology used for predistortion linearization[J]. High Power Laser and Particle Beams, 2019, 31: 123003. doi: 10.11884/HPLPB201931.190128
Citation: Wang Yongfei, Han Peisheng, Hu Qing, et al. Wideband matching technology used for predistortion linearization[J]. High Power Laser and Particle Beams, 2019, 31: 123003. doi: 10.11884/HPLPB201931.190128

一种用于预失真线性化器的宽带匹配技术

doi: 10.11884/HPLPB201931.190128
基金项目: 国家核高基重大科技专项(201501010101-003)
详细信息
    作者简介:

    汪永飞(1986-),男,博士,从事微波电路理论与技术研究;18618102902@163.com

  • 中图分类号: TN830.6

Wideband matching technology used for predistortion linearization

  • 摘要: 由于放大链路的增益波动以及不同频点之间非线性特性的差异,预失真器难以在不同的频点同时实现非线性特性匹配,即令整个频带内不同频点的线性度指标同时满足要求。由于预失真器和放大器之间的非线性失配,放大器在某些频点的非线性特性还会恶化。本文从线性化器与预失真器的宽带匹配出发,讨论了预失真线性化器与行波管放大器宽带匹配的条件以及非线性失配所带来的影响,当增益失配误差不大于1 dB时,在行波管放大器自身的三阶交调值不大于40 dB的非线性动态范围内,三阶交调下降幅度最大值为4.1 dB;通过采用级联增益补偿电路的方式,降低链路增益波动,实现预失真器和放大器的非线性匹配,真正拓展预失真线性化器的工作带宽。
  • 图  1  预失真线性化模型

    Figure  1.  Theoretical model of predistortion linearizer

    图  2  三阶交调下降值与增益波动误差的关系

    Figure  2.  Relationship between third-order intermodulation degradation and gain error

    图  3  某行波管放大器的AM/AM特性曲线

    Figure  3.  Curves of AM/AM characteristic of TWTA

    图  4  预失真器和行波管放大器不能良好匹配时,LTWTA的AM/AM特性曲线

    Figure  4.  Curves of AM/AM characteristic of LTWTA when PD and TWTA is not well matched

    图  5  行波管放大器的幅频特性曲线

    Figure  5.  Amplitude-frequency characteristic of TWTA

    图  6  预失真线性化器的幅频特性和相频特性

    Figure  6.  The amplitude-frequency and phase-frequency characteristics of PD

    图  7  行波管放大器线性化前后的增益和相位特性

    Figure  7.  Gain and phase characteristics of TWTA and LTWTA at there frequencies

    图  8  行波管放大器线性化前后的载波三阶交调比改善量

    Figure  8.  C/IM3 improvement of TWTA with predistortion linearization

  • [1] Katz A, Wood J, Chokola D. The evolution of PA linearization: From classic feedforward and feedback through analog and digital predistortion[J]. IEEE Microwave Magazine, 2016, 17(2): 32-40. doi: 10.1109/MMM.2015.2498079
    [2] Tripathi G C, Rawat M. RFin-RFout linearizer system design for satellite communication[J]. IEEE Trans Electron Devices, 2018, 65(6): 2378-2384. doi: 10.1109/TED.2018.2791558
    [3] 刘颖. 宽带无线通信数字预失真关键技术[D]. 成都: 电子科技大学, 2016: 6-37.

    Liu Ying. Research on key technologies of broadband wireless digital predistortion. Chengdu: University of Electronic Science and Technology of China, 2016: 6-37
    [4] 李文朝, 周东方, 张德伟, 等. 基于二极管Ka波段的新型可调预失真器[J]. 强激光与粒子束, 2014, 26:113004. (Li Wenchao, Zhou Dongfang, Zhang Dewei, et al. A novel diode-based Ka-band adjustable predistortion linearizer. High Power Laser and Particle Beams, 2014, 26: 113004
    [5] Hu B X, Wang G, Hao B L, et al. Analog predistortion linearizer on reducing corrected amplitude overshoot[J]. Journal of Electronics, 2014, 31(6): 597-602.
    [6] 邓海林, 张德伟, 周东方, 等. 一种双路矢量合成式毫米波预失真线性化器[J]. 强激光与粒子束, 2015, 27:123006. (Deng Hailin, Zhang Dewei, Zhou Dongfang, et al. A dual-branch vector synthesis millimeter-wave predistortion linearizer. High Power Laser and Particle Beams, 2015, 27: 123006
    [7] 虞崇志, 胡波雄, 唐康凇, 等. 一种用于毫米波行波管的微带预失真电路[J]. 电子与信息学报, 2017, 39(2):474-481. (Yu Chongzhi, Hu Boxiong, Tang Kangsong, et al. Micro-strip predistortion circuit for millimeter-wave travelling wave tube. Journal of Electronics & Information Technology, 2017, 39(2): 474-481
    [8] Zhang Dawei, Xu Xin, Yu Hongxi, et al. Predistortion linearizer for wideband AM/PM cancelation with left-handed delay line[J]. IEEE Microwave and Wireless Components Letters, 2017, 27(9): 794-796. doi: 10.1109/LMWC.2017.2734760
    [9] 鲍鑫, 张德伟, 邓海林, 等. 不同位置二极管串并联方式对射频电路的影响[J]. 强激光与粒子束, 2018, 30:073009. (Bao Xin, Zhang Dewei, Deng Hailin, et al. Influence of series and parallel diodes in different positions on RF circuit. High Power Laser and Particle Beams, 2018, 30: 073009
    [10] 邓海林, 陈会超, 周东方, 等. 一种补偿量可调的反射式预失真线性化器[J]. 真空科学与技术学报, 2018, 38(8):657-662. (Deng Hailin, Chen Huichao, Zhou Dongfang, et al. Design and evaluation of modified reflective predistortion linearizer with tunable compensation. Chinese Journal of Vacuum Science and Technology, 2018, 38(8): 657-662
    [11] Deng H, Zhang D, Lv D, et al. Analog predistortion linearizer with independently tunable gain and phase conversions for Ka-band TWTA[J]. IEEE Trans Electron Devices, 2019, 66(3): 1533-1539. doi: 10.1109/TED.2018.2890696
    [12] Katz A, Gray R, Dorval R. Wide/multiband linearization of TWTAs using predistortion[J]. IEEE Trans Electron Devices, 2009, 56(5): 959-964. doi: 10.1109/TED.2009.2015412
    [13] Katz A, Chiappetta M, Dorval R. Predistortion linearization to 100 GHz[C]//Proceedings of IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications. 2013: 34-36.
    [14] Villenmazet J F, Hissa Y, Azzara J C, et al. 1 GHz instantaneous wide-band analog predistortion linearizer for new telecom satellite transmit section[C]//IEEE Thirteenth International Vacuum Electronics Conference (IVEC). 2012: 425-426.
  • 加载中
图(8)
计量
  • 文章访问数:  969
  • HTML全文浏览量:  319
  • PDF下载量:  31
  • 被引次数: 0
出版历程
  • 收稿日期:  2019-04-24
  • 修回日期:  2019-08-15
  • 刊出日期:  2019-12-01

目录

    /

    返回文章
    返回