基于CORDIC算法的NCO  

NCO Based on CORDIC Algorithm

作　　者：张科峰[1] 彭帅[1] 蔡梦[1] 

机构地区：[1]华中科技大学电子科学与技术系,武汉430074

出　　处：《现代雷达》2008年第6期91-94,共4页Modern Radar

摘　　要：为了提高基于CORDIC算法NCO的无杂散动态范围,提出采用相位映射和相位抖动技术来提高无杂散动态范围。SIMULINK仿真结果表明改进后的NCO无杂散动态范围提高近10 dB,充分说明了该方法的可行性。In order to improve the SFDR of numerically controlled oscillator based on CORDIC algorithm,this paper pro- poses to use phase mapping and phase dither methods to improve the SFDR.Simulation by SIMULINK indicated that the SFDR of this modified NCO structure got 10 dB improvement,fully proves the feasibility of this method.

关 键 词：数控振荡器 坐标旋转算法 相位映射 相位抖动 无杂散动态范围 

分 类 号：TN752[电子电信—电路与系统]