期刊文献+

一种新型宽线性低灵敏度通用滤波器设计 被引量:3

Design of multifunctional filter with wide linear and low sensitivity
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摘要 提出了一种基于双极工艺实现跨导线性电可调的跨导运算放大器(EOTA)电路模型,采用EOTA和接地电容实现了多输入单输出的通用滤波器设计。该滤波电路具有在高输入阻抗节点处提供低通、高通、带通、带阻的电压响应,同时容易级联生成任意阶高阶滤波器。该滤波器通过调整EOTA的偏置电压或电流来设置独立电控参数ω0或Q,且参数灵敏度低,线性范围宽且无需考虑电路参数匹配等特点,文中分析了利用EOTA实现通用双二次滤波器的工作原理及生成高阶滤波器的方法,讨论了两种滤波功能的特点,结果证实了理论分析的正确性。 A circuit model of electronically tunable operational transconductance ampli? er (EOTA) based on bipolar technology is described. Multi -input and single - output universal filter used by EOTA and grounded capacitors has been designed. The proposed circuit provides lowpass, highpass, bandpass, bandstop voltage responses at a high impedance input terminal. The arbitrary high order filters are easy to generate by cascading the filter. The circuit parameters tOo and Q can be set orthogonally by adjusting the bias current or voltage. The filter has high sensitivity, wide linearity and the circuit parameters matching are eliminated. The working principle of Biquadratic Filters and the method of generating high order fil- ters with EOTA are analyzed. The two filter functions are discussed. The theoretical analyses are verified by experiments.
出处 《功能材料与器件学报》 CAS CSCD 北大核心 2012年第6期463-466,共4页 Journal of Functional Materials and Devices
基金 河南省科技厅重大项目(No.122102210434) 河南师范大学大学生创新校级重点资助项目
关键词 跨导运算放大器 通用滤波器 线性电可调 EOTA universal filter electronically and linearly tuned
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参考文献7

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共引文献2

同被引文献11

  • 1李志军,王春华,王仕果.最少元件的通用电流模式滤波器[J].电子元件与材料,2006,25(4):30-32. 被引量:7
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  • 10赵怡,王卫东.一种新型的宽线性范围差分电压输入电流传输器及其应用[J].电子器件,2011,34(2):179-183. 被引量:6

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