With this method , the minimum switching losses can be reached , and the maximum switching current can be reduced effectively . so this method can meet the requirement of hvdc - vsc where lower switch loss is emphasized 这种方法开关损耗最小，并可有效降低开关器件的最大开关电流，适应了hvdc - vsc降低开关损耗的需要。
The researches have proved the current mode superior to the voltage mode in high - frequency applications . in the paper a general integrator is completed to synthesize a bilinear si filter with a cutoff frequency of 17 . 2mhz 电流模技术的研究已经证明其高频应用中具有优于电压模技术的特性，文中对通用积分器加以完善，推导出双线性变换的开关电流滤波器，其截止频率达到17 . 2mhz 。
To make the exact design of low - sensitivity switched - current high - pass filters be convenient , a new design methods using the novel bilinear feed - forward differentiator is proposed . at the end two examples about digitally programming fir filter and si - ota auto - tuning filter are given 介绍了数字可编程fir滤波器和si - ota自动调谐滤波器等新型开关电流滤波器，并分别给出设计实例和设计注意事项。
According to the specification and the scheme three architectures including a gmc ( transconductor capacitor ) filter , a sc ( switched capacitor ) filter and a si ( switched current ) filter are researched and implemented , simulated in 0 . 18m cmos process . the results are as expected 根据系统要求及设计方案，分别研究并得到了跨导电容、开关电容和开关电流三种滤波器结构，采用0 . 18mcmos工艺进行仿真，其结果与预期的基本符合。
To compensate the error originated from the non - ideal character of the si circuits , some novel structures based on the technology of negative feedback , fully differential , class ab , sni and other technologies to compensate the clock feed through effects are proposed and analyzed 提出了应用负反馈技术、全差分技术、甲乙类技术、 s ~ 2i技术及钟馈效应消除技术的各种加强电路结构，用以补偿由开关电流电路非理想特性引起的各种误差。
The exact design methods of switched - current filters are summarized , such as the director synthesis of z - plane , euler mapping , state variable analysis , matrix decomposition , and signal - flow - graph simulation of the lc and switched capacitor prototypes . at the same time , a modified left decomposition matrix method is proposed to overcome the usual problems of large silicon area , high sensitivity and component spreads by minimizing the input circuits . examples of switched - current low - pass , high - pass and band - pass filters are given to verify the feasibility of these methods 总结分析了实现高精度开关电流滤波器设计的各种实用方法，包括z域综合法、欧拉映射法、模拟无源lc网络和开关电容网络的状态变量法、矩阵分解法和信号流图转置法，并对左分解法加以整理改进，提出一种更为简洁的设计结构，通过减化输入电路克服一般电路中存在的占用硅片面积大、灵敏度高等问题。
It has many advantages because current domain operation offers greater ease for high frequency operation , low voltage operation , and wide dynamic range . simultaneously , the switched - current circuit is compatible with digital vlsi technology , which does not require the linear capacitors . and the switched - current integrator does not require the voltage operation amplifier 开关电流电路是电流域模拟取样数据系统,具有如下显著优点:高频性能好,适于低压工作,动态范围大;不需要线性浮置电容,且与vlsi工艺兼容;不需要电压运算放大器。
In this thesis , theory of switched - current ( si ) technology and its application in the design and synthesis of active filters are researched deeply and systematically . some new switched - current building - blocks and exact approach methods of switched - current filters ( sif ) are proposed from modern lc networks and switched capacitor ( sc ) technology 论文深入探讨了开关电流技术及其在滤波器设计中的应用，并以现有无源网络和开关电容技术为基础，提出了一些基于开关电流技术的新型滤波器模块和滤波器设计方法。
In this paper , the principles on vlsi realization of one - dimension cwt are expounded , and the relevant methods of the implementation are classified and compared with each other . and then , a novel method of implementing one - dimension continuous wavelet transform using switched - current circuit is proposed , in which the continuous wavelet transform is implemented by the parallel structure of biquadratic functions realized with switched - current circuits on the basis of approximation theory of network function 本文阐述了小波变换vlsi实现的原理,并对相关的实现方法进行了分类和比较,提出了一种新的利用开关电流电路实现任意一维连续小波变换的方法,基于网络函数逼近理论,将连续小波变换转化为双二次函数并联电路结构,并用开关电流技术实现。
