基于流水线结构的相参数控振荡器

Proceedings Eleventh Annual IEEE International ASIC Conference (Cat. No.98TH8372) Pub Date : 1998-09-13 DOI:10.1109/ASIC.1998.723034

P. Nagvajara, T.R. Damarla, J. Wang, S. Chansilp

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引用次数: 2

摘要

提出了一种相位相干数控振荡器(NCO)的流水线结构设计。NCO同步生成采样正弦波形A cos(2/spl pi/ft+/spl phi/)和A sin(2/spl pi/ft+/spl phi/)，为16位有符号整数值。管道架构包括乘法器、加法器和64K/spl times/16嵌入式ROM。所提出的NCO在不同频率上提供相对于时间参考的波形相位相干性，这对于在多普勒合成中使用阶跃频率的相干雷达导引头至关重要。

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A phase-coherent numerically controlled oscillator based on pipeline architecture

A design of a pipeline architecture for a phase coherent numerically controlled oscillator (NCO) is presented. The NCO synchronously generates sampled sinusoidal waveforms A cos(2/spl pi/ft+/spl phi/) and A sin(2/spl pi/ft+/spl phi/), as 16-bit signed integer values. The pipeline architecture includes multipliers, adders, and a 64K/spl times/16 embedded ROM. The proposed NCO provides waveform phase coherency relative to the time reference over varying frequencies, which is essential for coherent radar seekers using stepped frequency in Doppler synthesis.

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Proceedings Eleventh Annual IEEE International ASIC Conference (Cat. No.98TH8372)

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