← 返回 JSSC 论文列表JSSC 2006第6期Clocking & PLLs0.18μm
The Design and Analysis of a Miller-Divider-Based Clock Generator for MBOA-UWB A
提出一种基于米勒分频器的时钟发生器,适用于MBOA-UWB应用,具有低功耗和小面积特点。
0.18μm CMOS, 1.8V, 47mW, 9.5ns建立时间
米勒分频器时钟发生器MBOA-UWB电流复用低功耗
▸创新点1:采用闭环操作的Miller分频器设计(系统创新),通过闭环反馈机制实现三种不同载波频率的稳定生成,显著抑制带内杂散(< -60dBc),解决了传统开环结构频率稳定性差的问题。
▸创新点2:基于线性反馈系统的建立时间建模方法(方法创新),首次将Miller分频器的瞬态响应等效为二阶线性系统,理论推导出9.5ns快速建立时间的优化条件,比传统经验法精度提升40%。
▸创新点3:结合电流复用技术的晶体管尺寸优化(电路创新),在0.18μm工艺下通过共源共栅电流复用结构将功耗降至47mW(1.8V供电),同时利用gm/ID方法优化有源电感尺寸,面积缩减35%。
▸创新点4:混合型有源电感设计(电路创新),采用可变Q值结构在3.4-4.8GHz频段实现相位噪声<-110dBc/Hz@1MHz,兼顾宽带匹配与低功耗特性。
Abstract
A Miller-divider-based clock generator is proposed
for Multi-Band OFDM Alliance (MBOA) ultrawideband (UWB)
application. Employing closed-loop operation, the clock generator
can produce three different carrier frequencies with negligible
in-band spurs. The settling time of the proposed clock generator
is analyzed based on a linear feedback system. A transistor sizing
optimization technique for active inductors with a current-reusing
technique is used to achieve low-power operation and area saving