一种新型7.5GHz 3.4mA相位切换三模预分频器  

A 7.5GHz 3.4mA triple-modulus prescaler based on novel phase-switching technique

作　　者：曲勃[1] 周健军[1] 莫亭亭[1] 李章全[1] 

机构地区：[1]上海交通大学微电子学院,上海200240

出　　处：《信息技术》2008年第10期38-40,共3页Information Technology

摘　　要：提出了一种新型基于相位选择结构的三模预分频器,与传统结构相比,提供了更多可选的分频比和更宽的输出频率覆盖范围,同时不增加电路复杂度与功耗,可以应用于支持多种无线标准的超高频频率合成器。设计采用了TSMC 0.18μm Analog/RF CMOS工艺,电源电压2.0V。仿真结果表明,电路最高工作频率为7.5GHz,最大电流消耗小于3.4mA。A triple-modulus prescaler based on novel phase-switching is proposed in this paper. It provides more division ratio and wider frequencies cover range without the additional complexity and power, can be applied to ultra-high frequency synthesizers for different wireless standards. The prescaler is fabricated in TSMC 0.18um Analog/RF CMOS process. The simulation shows it demonstrates a maximum operating frequency of 7.5GHz with less than 3.4mA current in 2V supply voltage.

关 键 词：频率合成器 预分频器 相位切换 电流模逻辑 切换窗口 

分 类 号：TN432[电子电信—微电子学与固体电子学] TN722