采用机电回路滤波器的65 db DR 1 mhz BW 110 mhz中频带通ΣΔ调制器

2007 IEEE Custom Integrated Circuits Conference Pub Date : 2007-09-01 DOI:10.1109/CICC.2007.4405714

R. Yu, Y. Xu

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引用次数: 1

摘要

提出了一种采用机电滤波器作为环路滤波器的四阶带通ΣΔ调制器。该机电回路滤波器具有功耗低、中心频率准确、无需调谐等优点。所提出的带通SigmaDelta调制器采用0.35 μm SiGe BiCMOS技术实现，并使用110 mhz SAW滤波器进行了测试。当采样频率为440 MHz时，原型芯片在1 MHz的信号带宽下实现65 db的DR和60 db的峰值SNDR。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A 65-dB DR 1-MHz BW 110-MHz IF bandpass ΣΔ modulator employing electromechanical loop filter

A 4th-order bandpass ΣΔ modulator employing electromechanical filter as loop filter is proposed. The electromechanical loop filter has the advantages of low power consumption and accurate center frequency without the need for tuning. The proposed bandpass SigmaDelta modulator is implemented in a 0.35-μm SiGe BiCMOS technology and tested with a 110-MHz SAW filter. When sampled at 440 MHz, the prototype chip achieves 65-dB DR and 60-dB peak SNDR in a 1-MHz signal bandwidth.

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2007 IEEE Custom Integrated Circuits Conference

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