一种用于蓝牙系统的延迟锁相正交信号发生器  

A Quadrature Generator Based on DLL for Bluetooth

作　　者：秦亚杰[1] 朱臻[1] 苏彦锋[1] 叶菁华[1] 陈一辉[1] 洪志良[1] 

机构地区：[1]复旦大学微电子学系,上海200433

出　　处：《固体电子学研究与进展》2005年第1期108-113,共6页Research & Progress of SSE

摘　　要：提出了一种延迟锁相结构的正交信号发生器 ,用于蓝牙的射频信号收发电路。介绍的延迟锁相环路结构使电路性能具有良好的工艺变化不相关性 ,在很宽的频带范围内均可获得高性能的正交信号。电路采用单层多晶硅、四层金属、0 .3 5 μm CMOS数字工艺实现 ,仿真结果表明 :电路稳定工作在 2 .45 GHz频率下 ,在 1 40 MHz的输入信号频率变化范围内 ,输出的正交信号相位偏差低于 1°,幅度偏差小于 5 %。电路主要由有源器件构成 。A quadrature generator based on Delay-Locked Loop (DLL) for Bluetooth applicati on is presented. The DLL design receives process technology independence, the ou tput signals are in accurate quadrature over a wide locking range. This scheme i nherently operates at a high signal frequencies, but is limited for sinusoidal i nput signals. Realized in 0.35 μm digital CMOS process, simulations including typical process variations of all components predict quadrature accuracy on the order of 5% of amplitude mismatch and 1° of phase error over a lager DLL lockin g range of 140 MHz.

关 键 词：正交信号 延迟锁相环路 相位偏差 幅度偏差 

分 类 号：TN431[电子电信—微电子学与固体电子学]