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JSSC 2009第9期RF & Wireless0.18μmPLL

A Wideband PLL-Based G/FSK Transmitter in 0.18 /22m CMOS Y ao-Hong Liu, Student Member , IEEE

提出一种基于PLL的宽带G/FSK发射机架构,数据速率不受PLL带宽限制。
0.18μm CMOS, 1.4V, 6.3mA, 11dBm输出功率, 6Mb/s最大数据速率, 1.5nJ/bit能效
PLLG/FSK发射机Sigma-Delta调制相位旋转器分数分频器
G/FSK数据应用于环路外部
采用Sigma-Delta调制相位旋转器
数字可编程生成多种G/FSK信号
Abstract
IEEE Abstract—A wideband phase-locked loop (PLL)-based G/FSK transmitter (TX) architecture is presented in this paper. In the pro- posed TX, the G/FSK data is applied outside the loop; hence, the data rate is not constrained by the PLL bandwidth. In addition, the PLL remains locked all the time, preventing the carrier frequency from drifting. In this architecture, the G/FSK modulation signal is generated from a proposed Sigma-Delta modulated Phase Ro- tator /40/6/1-PR/41. By properly combining