Liqiang Han
6 records found
1
Authored
This letter introduces a Gm-cell-based CMOS image sensor (CIS) achieving deep subelectron noise performance. The CIS presents a new compensation block and low-noise current source to improve the performance of the Gm pixel. Furthermore, an optional first-order IIR filter is im ...
This paper focuses on a new non-ideal phenomenon induced by the power supply crosstalk (PSC) of the row drive circuit in 8 T global shutter (GS) CMOS image sensors (CISs). A method to eliminate the non-ideal phenomenon is presented. Based on the circuit simulation, the relatio ...
To improve charge transfer efficiency (CTE) and eliminate image lag, the impact of spill back effect on image lag is studied in CMOS image sensors (CISs), particularly in high illumination condition. By establishing a mathematical model based on the thermionic emission and dri ...
This paper presents a highly linear CMOS image sensor (CIS) designed in a commercial 0.18-μ m CIS technology. A new type of pixel is proposed based on the linearity analysis of a conventional 4T active pixel. The new type of pixel can mitigate the nonlinearity caused by the in ...