Qiuyang Lin

TL;DR: The design of an ECG chip that facilitates non-contact ECG recording through capacitive coupling is presented, obtaining ECG waves and heart rate in the presence of motion artifacts as well as ambient interference.

TL;DR: This paper presents a low power, high dynamic range (DR), reconfigurable light-to-digital converter (LDC) for photoplethysmogram (PPG), and near-infrared spectroscopy (NIRS) sensor readouts and utilizes a current integration and a charge counting operation to directly convert the photocurrent to a digital code, reducing the noise contributors in the system.

TL;DR: A low power, reconfigurable, high dynamic range (DR), light-to-digital converter (LDC) for wearable PPG/NIRS recording, which merges the functionalities of a conventional transimpedance amplifier and ADC, while quantization in time domain significantly improves the DR.

TL;DR: Existing multiple-modality bio-signal recording and processing SoCs, circuit techniques for individual bio-Signal readout channels including electrocardiography, Electroencephalography, Bio-impedance, photoplethysmography, and non-contact sensing with high user comfort are reviewed.

TL;DR: In this article, the authors proposed a PPG readout circuit for COVID-19 patients, which can yield, next to HR and respiration, also SpO 2, which traditional ECG-based patches cannot provide.