集成连续时间σ - δ调制器和低噪声放大器在气管造口管无线应用中的应用

2016 5th International Symposium on Next-Generation Electronics (ISNE) Pub Date : 2016-05-04 DOI:10.1109/ISNE.2016.7543373

W. Lai, M. Chung

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引用次数: 2

摘要

本文介绍了一种采用数据加权平均(DWA)技术的连续时间(CT) σ - δ (ΣΔ)调制器和低噪声放大器(LNA)的设计和实验结果。设计了一种用于心电通信和生物信号无线采集的新型图像抑制低噪声放大器。在低噪声放大器设计中使用了级间t结构滤波器，以提供35db的图像抑制。DWA技术用于降低由于组件不匹配引起的DAC噪声。实验结果表明，ΣΔ调制器在10 mhz的信号带宽下可实现54 db动态范围、51 db信噪比和48 db SNDR，过采样比(OSR)为8，在1.2 v电源下功耗为19.8 mW，可用于无线传感器和通信的脑电图(EEG)或心电图(ECG)信号采集系统。这就提供了在芯片上安装二氧化碳浓度检测仪器的传感器。当传感器监测和无线向医生或健康云发送生物信号时，氧气发生器将实时支持。

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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Integrated continuous-time Sigma-Delta Modulator and low noise amplifier for tracheostomy tube wireless application

This paper presents the design and experimental results of a continuous-time (CT) sigma-delta (ΣΔ) modulator and low noise amplifier (LNA) with data-weighted average (DWA) technology. A new image-reject low noise amplifier is designed for ECG communication and bio-signal wireless acquisitions. An inter-stage T-structure filter is used in the low noise amplifier design to provide 35-dB image rejection. The DWA technique is used for reducing DAC noise due to component mismatches. Experimental results show the ΣΔ modulator achieves 54-dB dynamic range, 51-dB SNR, and 48-dB SNDR over a 10-MHz signal bandwidth with an oversampling ratio (OSR) of 8, while dissipating 19.8 mW from a 1.2-V supply, which can be used for electroencephalogram (EEG) or electrocardiogram (ECG) signal acquisition systems by wireless sensor and communication. This provided sensor setup CO2 concentration detecting instruments on chip. Oxygen generator will real time to support when sensor monitor and wireless send bio-signal to doctor or health cloud.

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2016 5th International Symposium on Next-Generation Electronics (ISNE)

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