...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Journal of Solid-State Circuits >Nonlinear Shaping SC Oscillator With Enhanced Linearity
【24h】

Nonlinear Shaping SC Oscillator With Enhanced Linearity

机译：具有增强线性度的非线性整形SC振荡器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A nonlinear shaping technique for a switched-capacitor (SC) bandpass filter (BPF) based oscillator yielding enhanced linearity is presented. Usually, for an SC oscillator consisting of a BPF and a two-level comparator, the linearity can only be improved by increasing the quality factor (${rm Q}$-factor) of the BPF. This paper proposes an efficient way to improve the linearity of SC BPF-based oscillators. In particular, by replacing the conventional two-level comparator by a sound multilevel comparator, a nonlinear shaping of the signal at the output of the comparator causes a significant improvement in linearity. To illustrate the effectiveness of the proposed technique, one conventional SC BPF-based oscillator and the proposed oscillator have been designed and fabricated in a standard 0.35-$mu{hbox {m}}$ CMOS technology. Each oscillator was designed to operate from a $pm $1.65 V supply voltage and a master clock frequency of 80 MHz. The oscillation frequency is 10 MHz and the ${rm Q}$-factor of the BPF is 10. Experimental results demonstrate that the proposed scheme improves the third-order harmonic distortion by 20 dB with respect to the conventional SC BPF-based oscillator.
机译：提出了一种非线性的整形技术，用于基于开关电容器（SC）带通滤波器（BPF）的振荡器，可提高线性度。通常，对于由BPF和两级比较器组成的SC振荡器，只能通过增加BPF的品质因数（$ {rm Q} $-factor）来改善线性度。本文提出了一种有效的方法来改善基于SC BPF的振荡器的线性度。特别地，通过用声音多级比较器代替常规的两级比较器，在比较器的输出处的信号的非线性整形导致线性度的显着改善。为了说明所提出的技术的有效性，已经在标准的0.35-μCMOS技术中设计和制造了一种常规的基于SC BPF的振荡器和所提出的振荡器。每个振荡器的设计工作电源电压为$ pm $ 1.65 V，主时钟频率为80 MHz。振荡频率为10 MHz，BPF的$ {rm Q} $因子为10。实验结果表明，相对于基于SC BPF的传统振荡器，该方案可将三阶谐波失真提高20 dB。

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