一种相位精确可调的四路正交信号发生器  

A Four Phase Quadrature Signal Generator with Adjustable Precise Phase

作　　者：王艳智 吴秀山[1] 蒋行舟 安斯光[1] 申屠南瑛[1] WANG Yanzhi WU Xiushan JIANG Xingzhou AN Siguang SHENTU Nanying(College of Mechanical and Electrical Engineering, China Jiliang University, Hangzhou 310018, P. R. China Zhejiang Longyou Zelong Electric Power Engineering, Longyou, Zhejiang 324400, P. R. China)

机构地区：[1]中国计量大学机电工程学院,杭州310018 [2]浙江龙游泽龙电力工程有限公司,浙江龙游324400

出　　处：《微电子学》2016年第6期806-808,813,共4页Microelectronics

基　　金：浙江省自然科学基金资助项目(LY4F040004);国家自然科学基金资助项目(51407172)

摘　　要：设计了一种相位精确可调的四路正交信号发生器,由相位精确调节器和二分频器构成。相位精确调节器通过控制尾电流源的导通产生可编程的电流,再使该电流转换成偏置电压叠加在时钟信号上,以此来调节二分频器产生的四路信号的相位差,使其相位精确互差90°。电路采用SMIC 0.13μm CMOS工艺进行仿真验证。结果表明,在电源电压为1.2V,偏置电流为7.2μA,且电平信号的选通位数n=6时,产生的四路正交信号的误差精度可达±0.1°,调相范围达±3.6°。A four phase quadrature signal generator with precise phase modulation was designed.It consisted of a precise phase modulator and a 1/2frequency divider.The precise phase modulator generated two programmable currents by controlling the conduction of the tail current sources,and then changed the currents into bias voltages to superimpose on the clock signal,so as to adjust the phase difference of the four signals generated by the 1/2frequency divider,which had made the phase differences of 90°each other.The proposed circuit was designed in the SMIC 0.13-μm CMOS technology.The simulation results showed that the phase error precision of four orthogonal signals could reach ±0.1°,and the phase modulation range could reached ±3.6°at a supply voltage of 1.2V,a bias current of 7.2μA and the bit of phase setting input signal of 6.

关 键 词：正交信号 相位调节器 二分频器 调相范围 

分 类 号：TN492[电子电信—微电子学与固体电子学]