高性能柔性全数字正交上下转换芯片

R. Pasko, L. Rijnders, P. Schaumont, S. Vernalde, D. Durackova
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引用次数: 13

摘要

本文介绍了一种高精度、灵活中频设置的全数字正交上下变换器的设计。信号的上/下转换是通过插值/抽取与可编程抗混叠滤波器相结合来实现的,在采样率转换期间保持所选频带。通过这种方式,实现了低功耗的高速解决方案。我们使用了一种新颖的技术来实现灵活的中频设置。所得到的结构能够处理高达160 MSPS的信号,适合于同轴接入网调制解调器应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
High-performance flexible all-digital quadrature up and down converter chip
In this paper, the design of an all-digital quadrature up and down converter with high accuracy and flexible IF settings is presented. The signal up/downconversion is achieved by interpolation/decimation combined with a programmable anti-alias filter preserving the selected frequency band during the sample rate conversion. This way a high-speed solution with low-power consumption is achieved. We used a novel technique to implement flexible IF settings. The resulting structure is capable of handling signals up to 160 MSPS and is suitable for coaxial access network modem applications.
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