A5072093360- CCD and CMOS Imaging Sensors
- Advanced Optical Sensing Technologies
- Infrared Target Detection Methodologies
- Advancements in PLL and VCO Technologies
- Analog and Mixed-Signal Circuit Design
- Advanced Adaptive Filtering Techniques
- Image Processing Techniques and Applications
- Advanced Data Compression Techniques
- Photonic and Optical Devices
- Digital Filter Design and Implementation
- Image and Signal Denoising Methods
- Advanced Image Processing Techniques
Northwest Institute of Nuclear Technology
2022-2023
A potential barrier is one of the most common lag sources for charge transfer in pinned photodiode (PPD) CMOS image sensors (CISs). In this article, an analytical model proposed PPD combined with gate (TG). Through detailed electrostatic analysis and TG, analytically expressed as a function doping concentrations, TG voltage, spatial dimensions, other physical parameters. The validated by technology computer-aided design (TCAD) simulations, results show that data are good agreement TCAD...
The effect of the pinned photodiode (PPD) shape on charge transfer has been investigated in this paper. By equating change pinning potential distribution due to PPD decrease depth depletion region vertical direction, an analytical model is proposed. for a triangular-like validated by TCAD simulations and very good agreement with simulation results. Based results, tower-shaped that can obtain constant lateral electric field given. Simulation results show have variation linearity much better...
Image deblurring is an important and challenging problem in imaging processing. It aims to restore clear images from degenerated ones caused by camera shake or target motion. The total variation (TV) regularization has been widely used image deblurring, which needs be carefully modified because of over-smoothing issue solution bias the homogeneous penalization. In this paper, a non-blind method based on normalized-weighted TV (NWTV) proposed. utilizes weight vector indicate importance...
Abstract The influence of pixel design on charge transfer, mainly potential barrier and pocket, is investigated in this paper. By simplifying the interface region between pinned photodiode (PPD) transfer gate (TG), an intuitive simple method for analyzing pocket presented. Through TCAD simulations, validity analysis verified, some key dimension process parameters PPD clarified. whole study help improve understanding limitation mechanism, can achieve high efficiency low image lag noise CMOS...
In the modern broadband transmitters, sampling rate of DAC is required to be higher and higher, bandwidth transmitted signal, meanwhile, wider wider. The traditional method digital up conversion (DUC) unable meet demand for transmission because limitation clock frequency field programmable gate array (FPGA). For applications, an improved high speed DUC proposed. interpolation filtering direct synthesis (DDS) are optimized. Firstly, mathematical model derived, structure improved. efficient...