一种高速14/16双模相位开关预分频器  

A High Speed Divide-by-14/16 Dual-Modulus Phase Switching Prescaler

作　　者：周叶[1] 沈维伦[1] 黄煜梅[1] 洪志良[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《复旦学报（自然科学版）》2009年第4期493-498,共6页Journal of Fudan University：Natural Science

摘　　要：分析了无线通信领域频率综合器的关键模块高速预分频器（prescaler）的设计方法，并根据电路要求设计了一个适用于WLAN802．11a／b／g标准的14／16双模相位开关预分频器．该电路采用SMIC0．18μmCMOS工艺实现，总芯片面积470μm×420μm．测试结果表明在1．8V电源电压下它的正常分频范围高达1．46～6GHz．当输入频率为6GHz时，电路在14和16两种分频模式下相位噪声分别为-117．70dBc／Hz@10kHz和～118．36dBc／[e-mail] design methodology of the key stage, high speed prescaler of frequency synthesizer for wireless communication is analyzed. Based on the circuit requirements, a 14/16 dual-modulus phase switching prescaler for WLAN 802. 11 a/b/g application is proposed. The circuit is realized with SMIC 0. 18μm CMOS process. The total area is 470μm × 420 μm. Measured results shows that the frequency range of the prescaler could be as high as 1.46- 6 GHz at 1.8 V power supply voltage. For input frequency of 6 GHz, the phase noise is -117. 70 dBc/Hz@10 kHz for modulus 14 and -118.36 dBc/Hz@10 kHz for modulus 16.

关 键 词：双模相位开关预分频器 频率综合器 锁相环 无线局域网 

分 类 号：TN432[电子电信—微电子学与固体电子学]