共查询到19条相似文献，搜索用时 140 毫秒
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用椭圆逼近法设计模拟带通滤波器,由模拟带通滤波器的转移函数分解成二阶节级联,完成有源模拟带通滤波器实际电路的设计.绘制出模拟带通滤波器的转移函数的幅频特性曲线,满足设计参数要求.并用Multisim2001对电路进行仿真. 相似文献
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文章设计了一种基于CMOS第二代电流控制传输器(CCCIIs)实现的电调谐电流模式多功能滤波器。该滤波器电路仅由四个CCCIIs和两个接地电容组成。通过选择合适的输入和输出端,就能实现低通、高通、带通、带阻和全通五种滤波。此外,不需元件匹配条件,只需改变CCCIIs的直流偏置电流Ib,就可以独立调节滤波器的固有频率wo和品质因数Q,且具有较低的有源和无源灵敏度。采用TSMC0.18um CMOS工艺参数,进行Hspice仿真证实了所设计的电路是正确的。 相似文献
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文章介绍了有源滤波器的工作特性和基本类型,对电力有源滤波器的控制技术进行了分析与总结,提出了适合我国的有源滤波器电路结构. 相似文献
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提出了一种具有独立输出端口的电流传送器二阶电流模滤波器的新电路，并由此得到了高通、带通和低通滤波特性．该电路具有敏感度较低和ＲＣ元件数较少的特点 相似文献
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本文在第二代电流传输器的基础上提出了多端输出第二代电流传输器（Moccll）的实现电路．并用cadance仿真电路,证明了所提出的电路的正确性。用该模块组成的电流模式滤波器,能同时实现低通、带通和高通。 相似文献
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应用Multitism10.0仿真软件分别对一阶、二阶有源低通、高通滤波电路进行了幅频相频特性分析,更进一步验证了有源滤波电路各自的滤波特性,为下一步合理的选择滤波电路提供了一定的理论依据。 相似文献
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Mohd Amin Malik 《Journal of The Franklin Institute》2010,347(2):523-532
A new configuration realizing current/voltage-mode (CM/VM) universal filter using two four terminal floating nullors (FTFN) and four passive components is presented. The current-mode configuration has single input and three outputs and realises simultaneously lowpass (LP), bandpass (BP) and highpass (HP) responses from which allpass (AP) and notch functions can also be implemented. The voltage-mode filter has three inputs and two outputs and can be configured to realise all the five filtering functions. The circuit in current-mode uses grounded capacitors which are ideal for monolithic integration. Besides using a bare minimum number of passive components, the topology enjoys low active and passive sensitivity figures. Experimental and PSPICE simulation results are also included. 相似文献
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A new active R filter which realizes a second order bandpass transfer function is given. The network employs only resistors and two operational amplifiers. Sensitivities to all passive and active circuit components are very low. Design equations are given and experimental results are also included. 相似文献
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为降低模拟采样前置电路的噪声,文章用集成运算放大器分别设计了低通滤波器,高通滤波器和带通滤波器电路三种电路,并用Multisim 12软件分别对这些电路进行了仿真并分析了电路各项指标和特点。 相似文献
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提出了采用单四端浮点零器实现电流模式二阶全通／陷波和一阶全通滤波器新电路,该电路具有高输出阻抗和氏无源灵敏度特点。 相似文献
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《Journal of The Franklin Institute》1987,323(2):209-233
The dispersion characteristics of inhomogeneous dielectric waveguides are studied using a transverse transmission line representation. With the techniques of distributed circuit analysis the behavior of graded index optical fiber is explained using network theoretic ideas. Specifically, network models are developed through which insight as to the mechanisms underlying the dispersion characteristics of such structures is gained from a transmission line filter analogy. For the case of circular geometries, new approximations for the radial Bessel functions are presented which again results in a simple transmission line filter. 相似文献
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提高电能质量的方法有很多,有源电力滤波器(APF)由于能够对谐波和无功电流进行快速、准确地补偿而被公认为消除电网污染、提高电能质量的有效方法。本文根据主电路拓扑结构,对相应的参数进行了计算,并结合MATLAB仿真软件对各参数进行了优化选择,最后根据文中的各个参数利用MATLAB仿真软件对APF进行了仿真。仿真结果表明,APF很好地实现了对负载输入电流的控制。 相似文献
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提出了用改进式电流传送器实现二阶电流模式状态变量滤波器新电路，并由此得到了高通、带通、低通滤波特性。计算机仿真结果表明理论分析是正确的，所提电路具有灵敏度甚低的特点。 相似文献
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系统由程控放大器、程控滤波器、A/D转换器和D/A转换器、单片机控制及显示电路组成,以AT89C51和FPGA器件为控制中心,实现滤波器工作模式选择,增益控制、调节截止频率等功能,并通过LCD显示滤波器的截止频率和放大器的放大倍数。整个系统具有良好的人机交互界面,精度高,实用性很强。 相似文献
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Hong-Guang Ma Xiao-Fei Zhu Jian-Feng Xu Ming-Shun Ai 《Journal of The Franklin Institute》2008,345(1):75-86
A new testing method for analog circuit is proposed in this paper. A low-pass Butterworth filter is taken as the typical system under test (SUT) since the analog circuits in different types of electronic systems can be regarded as the low-, band- or high-pass active (passive) filters. The chaotic signal, which is generated by an improved Chua's circuit, is employed as the excitation signal of SUT. The SUT is a “narrowband” system compared with the bandwidth of input signal, whose state is analyzed with an error-tracking approach. The experimental result depicts that this testing method can efficiently detect the change of the circuit parameter. Besides, another eight features are extracted from the output signal of SUT for analyzing the SUT states. A discussion is made for comparing the effectiveness of each feature according to the testing results. 相似文献