The design that has source wave filter
【Abstract】 The program of this graduated design is the design that has source wave filter. According to the transmission characteristic of the OTA , some OTA signal operation circuits and continuous time gm - c filters
which are founded in the current mode methods are designed , and the derivation process of the transfer function is also given. Here, I will first know RC, have the design of source wave filter, The various methods of approaching of wave filter, Frequency is alternated and goes to OTA-C wave filter from RC wave filter alternate project.
The circuit structure of OTA-C wave filter is simple , In this design, Have put forward to adopt signal, flow out the method that picture realizes arbitrary step OTA-C general wave filter ,. Through the direct analysis for network function, Derivation the OTA-C of arbitrary step transmission function realize circuit. In writing, the design example that has given wave filter is imitated with PSPICE, Mention method with proof, is feasible .
Key word:Singal flow graph ;operational-transconductance-amplifier (OTA ) ; active filter ; continuous- time;
目 录
第1章 滤波器的设计………………………………………………………(1)
1.1 巴特沃斯低通滤波器的设计方法…………………………………(1)
1.2 模拟高通、带通、带阻滤波器的设计测电路……………………(6)
第2章 设计概述……………………………………………………………(9)
2.1 滤波器的定义及分类……………………………………………… (9)
2.2有源滤波器的基本概念……………………………………………(10)
2.3设计的一般考虑…………………………………………………… (11)
2.4有源滤波器的设计步骤……………………………………………(12)
第3章 OTA-C连续时间滤波器的设计方法………………………(14)
3.1 OTA基本概念和应用原理……………………………………………(14)
3.2 OTA信号运算电路…………………………………………………… (16)
3.3 双二阶OTA-C滤波器分析 ………………………………………… (18)
3.4 由有源RC网络生成二阶OTA-C滤波器……………………………(21)
3.5 有源RC滤波器的快速设计方法…………………………………… (23)
第4章 电流镜………………………………………………………………(25)
4.1电流镜符号…………………………………………………………… (25)
4.2双极型基本电流镜…………………………………………………… (26)
第5章 灵敏度分析……………………………………………………… (30)
5.1 由系数灵敏度导出传输灵敏度…………………………………… (31)
5.2 由和Q灵敏度导出传输灵敏度……(32)
第6章 有源滤波器的计算机仿真模拟…………………………(33)
6.1 OrCAD/ PSpice9 简介………………………………………………(33)
6.2 计算机仿真模拟………………………………………………………(34)
致谢………………………………………………………………………………(38)
参考文献……………………………………………………………………… (39)
附录………………………………………………………………………………(40)