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三级Colpitts微波混沌振荡器的仿真研究

更新时间:2020-06-05 20:40:33 大小:303K 上传用户:六3无线电查看TA发布的资源 标签:振荡器 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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提出一种具有3级结构的微波Colpitts混沌振荡器,这种新的结构通过增加共基极组态的三极管抑制了电路中三极管寄生电容的负面影响,以提高微波Colpitts混沌振荡器的基本振荡频率和频带宽度。借助Matlab和HSPICE软件对新结构的理想非线性动力学模型和电路进行了时域和频域分析。选用截止频率为9GHz的三极管时,模型的电路仿真结果表明,新结构的基本振荡频率可达到4.9GHz;信号的频谱分布更为均匀平坦,10dB带宽可以达到4.9GHz。

In this paper, a novel microwave chaotic Colpitts oscillator is proposed,which contains three bipolar junction transistors connecting in series. In the novel structure, the negative influence of the parasitic capacitance of transistors is suppressed significantly, so that increasing the fundamental frequency of oscillation and expanding the bandwidth. According to ideal nonlinear dynamic model of the novel structure, the analysis based on Matlab and HSPICE are performed both in time and frequency domain with 9 GHz threshold frequency transistors. Simulation results show that, comparising with the two-stage oscillator, the maximum fundamental frequency of the proposed structure can be increased by 96% coming up to 4. 9...

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三级Colpitts微波混沌振荡器的仿真研究.pdf 303K

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