时钟发生器
收发机
CMOS芯片
炸薯条
时钟信号
电子工程
校准
时钟网络
信号(编程语言)
锁相环
信号发生器
电气工程
无线电频率
同步电路
物理
计算机科学
相位噪声
抖动
工程类
程序设计语言
量子力学
作者
Sung Ho Wang,José María Mengual Gil,Ickjin Kwon,Hyung Ki Ahn,Hyeyoung Shin,Beomsup Kim
摘要
This paper presents a self-calibrated I/Q clock generation technique for a direct conversion receiver. A 5GHz RF transceiver chip with on-chip self-calibrated I/Q clock generation circuit is implemented in a 0.18-µm CMOS technology. A tunable poly-phase filter controlled by a delay-locked loop adjusts the delay of I/Q clock signal paths to generate the precise I/Q clock signals. Measurement shows that the proposed self-calibration technique achieves I/Q clock mismatch less than 2 degrees over process and temperature variations at 5 GHz frequency.
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