新型两级超宽带混沌电路的设计与实现

doi:10.13190/j.jbupt.2020-096

北京邮电大学学报 ›› 2021, Vol. 44 ›› Issue (3): 120-124.doi: 10.13190/j.jbupt.2020-096

新型两级超宽带混沌电路的设计与实现

朱伟光, 郑海宇, 张欣雷, 张志涛, 胡善文

南京邮电大学电子与光学工程学院, 南京 210023

收稿日期:2020-07-29 出版日期:2021-06-28 发布日期:2021-06-23
通讯作者: 胡善文(1985-),男,副教授,E-mail:shanwenh@njupt.edu.cn. E-mail:shanwenh@njupt.edu.cn
作者简介:朱伟光(1992-),男,硕士生.
基金资助:
国家自然科学基金项目（61501261，61504061）；中国博士后基金项目（2017M621793）

Design and Implementation of a Novel Two-Level Ultra-Wideband Chaotic Circuit

ZHU Wei-guang, ZHENG Hai-yu, ZHANG Xin-lei, ZHANG Zhi-tao, HU Shan-wen

College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China

Received:2020-07-29 Online:2021-06-28 Published:2021-06-23

摘要/Abstract

摘要： 为了满足超宽带混沌通信系统对混沌信号源的要求，提出了一种新型两级超宽带混沌电路的设计，有效地提升了混沌信号的带宽.与经典的考毕兹混沌电路的结构相比，新型结构采用带有集电极电感的射极输出器作为信号输出端，引入高频谐振网络，补偿高频处信号功率谱密度，拓展频带宽度.通过MATLAB软件求解新型两级超宽带混沌电路的数值解，得到新型超宽带混沌电路的分叉图、相图；仿真分析得到电路输出的时域图、频谱图.结果表明：新型两级超宽带混沌电路可产生功率差在20 dB内、带宽约为7.5 GHz的宽带混沌信号，满足超宽带信号指标（3.1~10.6 GHz）对混沌信号源的要求.

关键词: 超宽带混沌通信, 混沌信号, 考毕兹混沌电路, 射极输出器, 集电极电感

Abstract: In order to meet the requirements of chaotic signal sources for ultra-wideband chaotic communication systems, a new two-stage ultra-wideband chaotic circuit design is proposed to improve the bandwidth of chaotic signals effectively. Compared with the classic Colpitts chaotic circuit structure, the new structure uses an emitter follower with a collector inductor as the signal output end and introduced high-frequency resonance network. Thereafter, the signal power spectral density is compensated at high frequencies and the bandwidth was extended. The numerical solution of the new two-stage ultra-wideband chaotic circuit is obtained by MATLAB, and the bifurcation diagram and phase diagram of the new ultra-wideband chaotic circuit are obtained. The time domain diagram, spectrum diagram of the circuit output are also obtained through simulation analysis. It is shown that the new two-stage ultra-wideband chaotic circuit can generate 7.5 GHz wideband chaotic signal with a power within 20 dB, which meets the requirements of ultra-wideband signal indicators(3.1~10.6 GHz) for chaotic signal sources.

Key words: ultra-wideband chaotic communication, chaotic signals, Colpitts chaotic oscillator, emitter follower, collector inductance

中图分类号:

TN75

朱伟光, 郑海宇, 张欣雷, 张志涛, 胡善文. 新型两级超宽带混沌电路的设计与实现[J]. 北京邮电大学学报, 2021, 44(3): 120-124.

ZHU Wei-guang, ZHENG Hai-yu, ZHANG Xin-lei, ZHANG Zhi-tao, HU Shan-wen. Design and Implementation of a Novel Two-Level Ultra-Wideband Chaotic Circuit[J]. Journal of Beijing University of Posts and Telecommunications, 2021, 44(3): 120-124.

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新型两级超宽带混沌电路的设计与实现

Design and Implementation of a Novel Two-Level Ultra-Wideband Chaotic Circuit

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