A5101637603- Analog and Mixed-Signal Circuit Design
- Advancements in Semiconductor Devices and Circuit Design
- Radio Frequency Integrated Circuit Design
- CCD and CMOS Imaging Sensors
- Electrocatalysts for Energy Conversion
- ECG Monitoring and Analysis
- Neuroscience and Neural Engineering
- Low-power high-performance VLSI design
- Advanced Power Amplifier Design
- Advanced DC-DC Converters
- Advanced Battery Technologies Research
- Non-Invasive Vital Sign Monitoring
- Silicon Carbide Semiconductor Technologies
- Metallurgy and Material Forming
- Sensor Technology and Measurement Systems
- Fuel Cells and Related Materials
- Electronic Packaging and Soldering Technologies
- Advanced battery technologies research
- Metal Forming Simulation Techniques
- Healthcare Technology and Patient Monitoring
- Wireless Power Transfer Systems
- Powder Metallurgy Techniques and Materials
- Full-Duplex Wireless Communications
- Hybrid Renewable Energy Systems
- Advancements in PLL and VCO Technologies
Ningbo University of Technology
2024-2025
Nankai University
2018-2024
Fire Safety Design
2022
Institute of Navigation
2022
Texas Tech University
2010-2014
National Formosa University
2004
Dublin City University
1992-1994
Abstract The present study proposes a novel engineering concept for the customization of functionality and construction superstructure to fabricate 2D monolayered N‐doped carbon electrocatalysts decorated with Co single atoms or 2 P nanoparticles derived from bimetallic ZnCo‐ZIF precursors. hierarchically porous maximizes exposure accessible active sites, enhances electron/mass transport efficiency, accelerates reaction kinetics simultaneously. Consequently, embedded (Co‐NCS) exhibits...
This paper presents a SiGe envelope-tracking (ET) cascode power amplifier (PA) with an integrated CMOS envelope modulator for mobile WiMAX and 3GPP long-term evolution (LTE) transmitters (TXs). The entire ET-based RF PA system delivers the linear output of 22.3/24.3 dBm overall power-added efficiency 33%/42% at 2.4 GHz 64 quadrature amplitude modulation (64QAM) LTE 16 modulation, respectively. Additionally, it exhibits highly efficient broadband characteristic multiband applications....
This paper proposes a design of ultra-low-power successive approximation register (SAR) analog-to-digital converters (ADC) specially optimized for very low frequency biosensor applications. Two new techniques are introduced: 1) novel digital-to-analog converter (DAC) switching method suitable single-ended SAR ADCs; and 2) counter-based digital control circuitry. The DAC uses <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">VR</i> /2 as an only...
Abstract In the pursuit of sustainable hydrogen production via water electrolysis, paramount importance electrocatalyst stability emerges as a defining factor for long‐term industrial viability. A thorough understanding and enhancement not only ensure extended catalyst lifetimes but also pave way consistent efficient generation. This review focuses on pivotal role in determining practical viability oxygen evolution electrocatalysts (OECs) large‐scale applications electrolysis production. The...
Low-temperature silver (Ag) sintering is emerging as a cutting-edge die-attach technology for power electronics packaging. However, the industry still has concerns about completely accepting this technology. One of reasons lack knowledge mechanism and process sintered bonding on various metallization. Before, we reported preliminary assessment die-shear strength microstructures Si dummy device attached Ag, Au, Cu This research will go deeper into practice science attaching SiC devices with...
Proton exchange membrane water electrolysis (PEMWE) with high‐purity H 2 and O products swift response to electricity fluctuation is of great interest for renewable energy, chemical pharmaceutical industries. Ruthenium oxide shows promise as an alternative iridium catalysts in PEMWE but suffers from severe anodic corrosion. Herein, a pluralistic electronic structure modulation approach presented address the instability issue Ru, by situ growing Mn x Ru 1− solid solution on MnO , coated...
One challenge of designing a dc-coupled biomedical radar sensor is dealing with the dc offset voltage presented in its receiver. The undesired mainly caused by clutter reflection and hardware imperfection. It may saturate baseband amplifier limit maximum dynamic range that can achieve. AC-coupling signal eliminate but it will also distort signal, thus not be acceptable for high precision applications. In this paper, proposed incorporating an analog cancellation circuit fast start-up feature....
A GM-R amplifier is proposed as a residual to implement 16-bit two-stage non-pipelined ADC in intermittent signal acquisition applications. Unlike common capacitive feedback amplifiers, amplifiers utilize resistor ratios generate constant gain for small input amplitude ranges and wide temperature ranges. The circuit of the consists two source followers bridge resistor, thus converting voltages currents, transconductance reciprocal resistor. offset voltage corrected by one-time foreground...
This paper presents an ultralow-power CMOS linear transconductor design operating in weak inversion for low frequency g <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</sub> -C filter potential biomedical applications, where the transconductance should be to reduce capacitor size, and minimize distortion. Bulk-driven degeneration techniques are used, we have adopted this G cell as a source resistor achieve 91% reduction value. In addition,...
An 8-bit single-ended ultra-low-power successive approximation register (SAR) ADC with a novel DAC switching method is designed and fabricated in 0.35-μm BCD (bipolar-CMOS-DMOS) technology. The uses V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">R</sub> /2, rather than , as the only reference voltage to digitize input signals amplitude range of (0, ). scheme also compared other methods MATLAB. Compared conventional method, proposed design...
This paper presents a noncontact human-machine interface which is capable of sensing and indicating the position human hand that approaching probing coil. High sensitivity achieved by utilizing structure including two oscillators mixer to compare extract electromagnetic shift between coils. The coils chosen in this system have planar small size, can be easily built on printed circuit board or integrated into portable device for detection. hand-coil analyzed quantitatively both inductive...
This paper presents a low-dropout (LDO) regulator structure which sets its bias current adaptively based on load for energy efficiency. Over-current and short-circuit protection functions are implemented in the LDO with almost zero quiescent addition. The proposed is inherent stable without output capacitance requirement. was fabricated standard 0.18 pm technology measured consumption of 11nA under no-load condition maximum available 50mA. line regulations were 0.86mV/V 0.2mV/mA, respectively.
This paper presents a low-power CMOS analog front-end (AFE) IC designed with selectable on-chip dual AC/DCcoupled paths for bio-sensor applications.The DC-coupled path can be selected to sense biosignal useful DC information, and the AC-coupled sensing AC content of by attenuating unwanted component.The AFE includes instrumentation amplifier (INA), two variable-gain 1 st -order low pass filters (LPF) tunable cut-off frequencies, fixed gain 2 nd Sallen-Key high-pass filter (HPF) buffer an...
This paper presents a BJT-based temperature sensor inaccuracy of ±0.25 °C (3σ). To handle noises in AFE and ADCs, two modified techniques are put forward, respectively. One technique utilized the analog front end is choppers with sub-OPAMPs. Two sub-OPAMPs chopped under non-overlapped clocks 90-degree phase difference used to suppress chopper ripple while removing low frequency noises. achieve an accurate digitization, zoom ADC which combines SAR coarse conversion Sigma-Delta fine applied...
This paper presents a design example of an ultra-low power single-channel analog front-end (AFE) integrated circuits (IC) and system for biomedical sensing applications. The 0.18-μm CMOS AFE IC includes low noise instrumentation amplifier (INA), low-pass filter (LPF), variable gain (VGA), successive approximation register (SAR) analog-to-digital converter (ADC). architecture is analyzed on the level to minimize total consumption with high integration optimized ECG system. SPICE simulations...
This paper presents some design insights on achieving a fully monolithic silicon-based radio frequency (RF) power amplifier (PA) using the envelope-tracking (ET) techniques for low-power broadband wireless applications. We will show that from our experience, highly integrated BiCMOS (ET-PA) system provides considerable efficiency-linearity enhancement, and works well with impressive power-saving 3G/4G cellular signals of high peak-to-average ratio (PAR). also demonstrate further performance...
An intelligent non-contact wireless patient monitoring system is presented in this paper. The capable of measuring the vital signs (respiration rate and heart beat) detecting patients' motion without physically contacting them by using a miniature Doppler radar sensor system. can provide all-round near-real-time 24/7 monitoring, which be used hospitals homes to protect patients as first line defense for acute-care assisted-living.
CMOS Envelope Tracking (ET) amplifier and a RF SiGe BiCMOS power (PA) for mobile WiMAX applications is presented. Several versions of the ET amplifiers are designed their consumption bandwidth considerations discussed. Consequently, entire polar TX system performances design trade-offs presented compared against different design. The IC occupies total area 1×1.4 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> being fabricated in TSMC...