Results 21 to 30 of about 163,099 (316)

A 5 GS/s 29 mW Interleaved SAR ADC With 48.5 dB SNDR Using Digital-Mixing Background Timing-Skew Calibration for Direct Sampling Applications

IEEE Access, 2020
This article presents a 16-channel 5 GS/s time-interleaved (TI) SAR ADC for a direct-sampling receiver that employs a digital-mixing background timing mismatch calibration to compensate for timing-skew errors.
Mingqiang Guo, Jiaji Mao, Sai-Weng Sin, Hegong Wei, Rui P. Martins   +4 more
doaj   +1 more source

Modulating Individual Alpha Frequency through Short-Term Neurofeedback for Cognitive Enhancement in Healthy Young Adults

Brain Sciences, 2023
Human alpha oscillation (7–13 Hz) has been extensively studied over the years for its connection with cognition. The individual alpha frequency (IAF), defined as the frequency that provides the highest power in the alpha band, shows a positive ...
Ben-Zheng Li, Wenya Nan, Sio Hang Pun, Mang I. Vai, Agostinho Rosa, Feng Wan   +5 more
doaj   +1 more source

Review and Selection Strategy for High-Accuracy Modeling of PWM Converters in DCM

Journal of Electrical and Computer Engineering, 2018
Among various modeling methods for DC-DC converters introduced in the past two decades, the state-space averaging (SSA) and the circuit averaging (CA) are the most general and popular exhibiting high accuracy.
Yu-Jun Mao, Chi-Seng Lam, Sai-Weng Sin, Man-Chung Wong, Rui Paulo Martins   +4 more
doaj   +1 more source

Recent Advances in High-Resolution Hybrid Discrete-Time Noise-Shaping ADCs

IEEE Open Journal of the Solid-State Circuits Society, 2021
High precision data acquisition requires very-high-resolution Analog-to-digital converters (ADC) for kHz speed or to keep a relatively high resolution for wider bandwidth (BW) around the MHz range.
Dongyang Jiang, Sai-Weng Sin, Liang Qi, Guoxing Wang, Rui P. Martins   +4 more
doaj   +1 more source

Evaluation and Perspective of Analog Low-Dropout Voltage Regulators: A Review

IEEE Access, 2022
Low-dropout regulators (LDOs) are widely adopted in power management integrated circuits (PMICs) and serve as a bridge between the switching regulators and individual on-chip modules to provide a smooth, regulated output voltage. Compared to digital LDOs
Tan Yee Chyan, Harikrishnan Ramiah, S. F. Wan Muhamad Hatta, Nai Shyan Lai, Chee-Cheow Lim, Yong Chen, Pui-In Mak, Rui P. Martins   +7 more
doaj   +1 more source

Design Trends and Perspectives of Digital Low Dropout Voltage Regulators for Low Voltage Mobile Applications: A Review

IEEE Access, 2023
Low-dropout (LDO) voltage regulator has fascinated industry professionals and academia for the past few decades, and this trend is expected to continue in the coming years.
Li Fang Lai, Harikrishnan Ramiah, Yee-Chyan Tan, Nai Shyan Lai, Chee-Cheow Lim, Yong Chen, Pui-In Mak, Rui P. Martins   +7 more
doaj   +1 more source

Natural discharge after pulse and cooperative electrodes to enhance droplet velocity in digital microfluidics

AIP Advances, 2014
Digital Microfluidics (DMF) is a promising technology for biological/chemical micro-reactions due to its distinct droplet manageability via electronic automation, but the limited velocity of droplet transportation has hindered DMF from utilization in ...
Tianlan Chen, Cheng Dong, Jie Gao, Yanwei Jia, Pui-In Mak, Mang-I Vai, Rui P. Martins   +6 more
doaj   +1 more source

A Novel and Robust Single-cell Trapping Method on Digital Microfluidics

Bio-Protocol, 2020
Due to cell heterogeneity, the differences among individual cells are averaged out in bulk analysis methods, especially in the analysis of primary tumor biopsy samples from patients.
Jiao Zhai, Haoran Li, Ada Hang Heng Wong, Cheng Dong, Shuhong Yi, Yanwei Jia, Pui-In Mak, Chuxia Deng, Rui Martins   +8 more
doaj   +1 more source

Introduction to the Special Section on High-Speed Wireline and Optical Communication Circuits and Systems

IEEE Open Journal of Circuits and Systems, 2021
This Special Section of the IEEE Open Journal of Circuits and Systems is dedicated to a collection of articles on High-Speed Wireline and Optical Communication Circuits and Systems, to promote techniques in both circuit and system levels to tackle ...
Ping-Hsuan Hsieh, Chun-Ming Hsu, Yunzhi Dong   +2 more
doaj   +1 more source

An Overview of Hybrid DC–DC Converters: From Seeds to Leaves

IEEE Open Journal of the Solid-State Circuits Society
With the surging demands for higher current at sub-1-V supply level in high-performance digital systems, high-efficiency and high-current-density power converters are essential for system integration.
Yan Lu, Junwei Huang, Zhiguo Tong, Tingxu Hu, Wen-Liang Zeng, Mo Huang, Xiangyu Mao, Guigang Cai   +7 more
doaj   +1 more source