...
首页> 外文期刊>IEEE Journal of Solid-State Circuits >Design of a low-distortion 22-kHz fifth-order Bessel filter
【24h】

Design of a low-distortion 22-kHz fifth-order Bessel filter

机译:低失真22kHz五阶贝塞尔滤波器的设计

获取原文
获取原文并翻译 | 示例
           

摘要

A linearity improvement technique employing passive resistors and current-steering MOS transistors as a variable resistance element is proposed to implement a low-distortion filter in CMOS technology. This proposed implementation relies on the linearity of the passive resistors and the tunability of the current-steering MOS transistors operating in the triode region to overcome the limited linearity performance in continuous-time electronically tunable filters. By using the existing systematic feedback loops in the active filters and placing the nonlinear elements inside the feedback, the distortion resulting from the nonlinear devices is greatly reduced by the filter loop gain. A 22-kHz fifth-order Bessel filter, its dynamic range optimized by applying Karmarkar's rescaling algorithm and self-tuned with a switched-capacitor reference resistor, demonstrates better than -90-dB THD with a 2-kHz, 4-V/sub pp/ signal in 5-V 2- mu m CMOS.
机译:提出了一种采用无源电阻器和电流控制型MOS晶体管作为可变电阻元件的线性改进技术,以在CMOS技术中实现低失真滤波器。提出的实施方案依赖于无源电阻器的线性度和在三极管区域工作的电流控制MOS晶体管的可调性,以克服连续时间电子可调滤波器中有限的线性性能。通过在有源滤波器中使用现有的系统反馈环路并将非线性元件放置在反馈内部,可以通过滤波器环路增益大大降低非线性器件产生的失真。一个22 kHz的五阶贝塞尔滤波器,其动态范围通过应用Karmarkar的重缩放算法进行了优化,并通过一个开关电容器参考电阻进行了自调谐,在2 kHz,4 V / sub的情况下,其谐波失真优于-90 dB pp /信号在5-V2-μmCMOS中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号