Ultra Broadband Predistortion Circuit for Radio-over-Fiber Transmission Systems
Ultra Broadband Predistortion Circuit for Radio-over-Fiber Transmission Systems
复制标题
用于光纤无线电传输系统的超宽带预失真电路
DOI:
10.1109/jlt.2016.2604395
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发表时间:
2016-11
期刊:
影响因子:
--
通讯作者:
Ye Zhang
中科院分区:
文献类型:
--
作者:
Ran Zhu;Xiupu Zhang;Dongya Shen;Ye Zhang
A dual Schottky diode-based ultrabroadband predistortion circuit (PDC) is designed and experimentally verified to linearize both directly and externally modulated radio-over-fiber (RoF) transmission systems. A monolithic dual Schottky diode is used in the PDC to reduce the footprint and improve the bandwidth. The measured S-parameters show that the circuit is able to work for up to 40 GHz. The theory of third order intermodulation distortion (IMD3) generation by the PDC is established, and calculated IMD3 agrees well with the measured. Two measures are used to verify the PDC: spurious-free dynamic range (SFDR) and error vector magnitude (EVM) for WiFi signal at 2.4 GHz. For a directly modulated RoF transmission linearized by the PDC, the SFDR is improved by ~12 dB. For an externally Mach-Zehnder modulator (MZM) modulated RoF transmission linearized by the PDC, the SFDR is improved by higher than 5 dB from 2 to 30 GHz, and in particular higher than 12 dB from 2 to 5 GHz. For 2.4-GHz WiFi signal over the externally modulated RoF transmission linearized by the PDC, the EVM for WiFi signal is improved by up to 5.1 dB for back-to-back and 3.5 dB for 20-km SMF transmission.
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DOI:
10.1109/tmtt.2010.2074530
发表时间:
2010-09
影响因子:
4.3
作者:
Yiming Shen;B. Hraimel;Xiupu Zhang;G. Cowan;K. Wu;Taijun Liu
通讯作者:
Yiming Shen;B. Hraimel;Xiupu Zhang;G. Cowan;K. Wu;Taijun Liu
影响因子:
3.8
作者:
Yinqing Pei;Kun Xu;Jianqiang Li;Anxu Zhang;Yitang Dai;Yuefeng Ji;Jintong Lin
通讯作者:
Yinqing Pei;Kun Xu;Jianqiang Li;Anxu Zhang;Yitang Dai;Yuefeng Ji;Jintong Lin
影响因子:
2.6
作者:
R. Zhu;Xiupu Zhang;B. Hraimel;Dongya Shen;Taijun Liu
通讯作者:
R. Zhu;Xiupu Zhang;B. Hraimel;Dongya Shen;Taijun Liu
影响因子:
2.6
作者:
Duk-Ho Jeon;Hyun-Do Jung;Sang-Kook Han
通讯作者:
Duk-Ho Jeon;Hyun-Do Jung;Sang-Kook Han
影响因子:
2.6
作者:
K. K. Loi-K.;J. Hodiak;X. Mei;C. Tu;W.S.C. Chang
通讯作者:
K. K. Loi-K.;J. Hodiak;X. Mei;C. Tu;W.S.C. Chang