先进的' Fs/2'离散时间GSM接收机在90纳米CMOS

L. Joet, A. Dezzani, F. Montaudon, F. Badets, Florent Sibille, Christian Corre, L. Chabert, R. Mina, F. Bailleuil, D. Saias, F. Paillardet, E. Perea
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引用次数: 18

摘要

一种新的离散时间接收器架构能够专门规避CMOS集成问题,利用ZIF架构的优势,同时避免闪烁噪声和二阶前端非线性的影响。该架构兼容进一步扩展,已在90纳米CMOS的GSM接收器上实现。该接收机的核心面积为1mm2,灵敏度为- 108dbm, IIP3为- 16dbm。它基于一种离散时间方法,使基带信号以采样频率的一半为中心。接收机集成了低噪声放大器、滤波器和两个40 mhz σ δ模数转换器,实现了100 kHz的12位分辨率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Advanced `Fs/2' Discrete-Time GSM Receiver in 90-nm CMOS
A new discrete-time receiver architecture enables to specifically circumvent CMOS integration issues, taking advantage of ZIF architectures yet escaping impact of flicker noise and second-order front-end non-linearity. This architecture, compatible with further scaling, was implemented for a GSM receiver in 90-nm CMOS. This receiver occupies 1-mm2 core area, achieves -108-dBm sensitivity, and -16-dBm IIP3. It is based on a discrete-time approach centering the baseband signal at half the sampling frequency. The receiver integrates Low-Noise Amplifier, filters and two 40-MHz sigma delta Analog to Digital Converters achieving a 12-bit resolution in 100 kHz.
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