Lei Qiu

A 16-Bit High-Accuracy R-2R DAC Using Auxiliary-DAC-Assisted Bit-by-Bit Calibration

Yidan Zhang, Lei Qiu, Jiangfan Wen

cn (code pays fourni par la source)

A hybrid voltage-domain and time-domain quantization technique for ultra-low current sensing

Jiahao Dong, Qide Cheng, Lei Qiu, Peng Zeng et autres

cn (code pays fourni par la source)

MSCR: Multi-Source-Collaborative Reconfigurable RF Energy Harvester with 3-D MPPT Achieving −32 dBm Sensitivity and 8X Boost in Available Output Power

Yunzhi Ma, Yiming Liu, Haoyu Chen, Yongling Zhang et autres

cn (code pays fourni par la source)

A 1.78 TOPS/W sparse CNN accelerator with pixel-first architecture for photoacoustic imaging

Jie Ma, Shenglong Zhuo, Zhengyuan Zhang, Yifan Wu et autres

cn, sg (code pays fourni par la source)

A 14-b 65.3-dB SNDR 200-MS/s Coarse-fine SAR ADC with Rail-to-Rail Input Common Mode Range in 28-nm CMOS

Jiangfan Wen, HaoLi Hu, Hui Zhang, Bingbing Yao et autres

cn (code pays fourni par la source)

A Multi-Band IoT Tag Featuring a 150Mb/s Calibration-Free 64-QAM Backscatter Modulator and a 10Mb/s LO-Free DBPSK Receiver

Yongling Zhang, Zheng Qin, Lei Qiu, Patrick Mercier et autres

This paper presents the first energy-efficient backscatter tag that supports multi-band high-throughput bi-directional communication, by proposing a universal calibration-free reconfigurable 64-QAM backscatter modulator and a carrier-frequency-independent, LO-Free DBPSK receiver (RX). The chip consumes 9.65 µW for 64-QAM uplink at 150 Mb/s and …

cn, us (code pays fourni par la source)

A 13-b 320-MS/s Noise-Successive-Attenuated SAR ADC with R-C-Traded-Off Reference Buffer

Jiangfan Wen, Qide Cheng, Shenglong Zhuo, Miao Meng et autres

This paper presents a 13-b 320-MS/s noise-successive-attenuated (NSA) SAR ADC in 28-nm CMOS. An inverter-based NSA preamplifier assisted by an adaptive current-biasing loop is proposed, which achieves an equivalent noise of 128 µVrms while consuming only 0.44 mW. A dynamic-power-and-slew-free switching technique …

cn (code pays fourni par la source)

A Crystal-Less Backscatter Tag Demonstrating Bi-Directional 802.11b-WiFi Communication with On-the-Fly Baseband Processing

Yongling Zhang, Lei Qiu, Patrick Mercier, Miao Meng

This paper presents a crystal-less WiFi 802.11b backscatter tag, which generates directly-decodable WiFi packets by leveraging ambient, uncontrolled WiFi signals as carriers. This is accomplished by: 1) implementing an envelope-based demodulator that exploits the WiFi Barker-code property to extract pulse-width signatures for …

cn, us (code pays fourni par la source)

An 8.2μW Fully-Packaged Wireless Implantable SoC for Chemical and Electrical Neural Signal Monitoring

Minghao Chen, Gangzhen Zhu, Weidong Zhao, Hong Liao et autres

This work presents the first wireless implantable SoC for multimodal neural signal monitoring. The system integrates fast-scan cyclic voltammetry (FSCV) and organic electrochemical transistor (OECT)-based local field potential (LFP) sensing within a power-constrained, wirelessly powered platform. The SoC comprises a PID-controlled background …

cn (code pays fourni par la source)

A 150-Msps 77-dB SNDR SAR ADC in 28-nm CMOS

Bingbing Yao, Jiangfan Wen, Likai Shen, Qide Cheng et autres

This paper presents a 150-Msps 77-dB SNDR SAR ADC consuming 11.3 mW and occupying 0.023 mm2with on-chip reference buffer in 28-nm CMOS. The performance is realized by: 1) a coarse-fine-superior SAR architecture achieving a conversion noise and speed of ~58 µVrms and …

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A 0.38 ppm/°C High-Order Compensated Voltage Reference Using Digitized Temperature Range Partitioning

Xiaopeng Wang, Haiwen Tian, Huosheng Wen, Zhongxiao Tian et autres

This paper presents a high-order curvature-compensated voltage reference using a digitized temperature sub-ranging technique. The design employs a coarse on-chip temperature sensor that partitions the operating temperature range into 30 segments. Segment-specific calibration codes stored in memory are autonomously applied through a …

cn (code pays fourni par la source)

A Hybrid Voltage-Domain and Time-Domain Quantization Technique for Ultra-Low Current Sensing

Jiahao Dong, Qide Cheng, Lei Qiu, Peng Zeng et autres