Publications by Louis Harik | EPFL Graph Search

Measurement and Performance Evaluation of a Silicon On Insulator Pixel Matrix

Maher Kayal, Jean-Michel Sallese, Louis Harik

A new technique for driving silicon-on-insulator pixel matrixes has been proposed in [1], which was based on transient charge pumping for evacuating the extra photogenerated charges from the body of the transistor. An 8x8 pixel matrix was designed and fabr ...

2010

New approach for SOI pixel sensor : analysis and implementation

Louis Harik

Silicon on Insulator (SOI) is an interesting alternative to bulk silicon for the fabrication of integrated circuits due to its advantages with respect to the junction leakage, low switching noise coupling, high temperature immunity, low voltage and low pow ...

EPFL2009

SOI Pixel Based on a Floating Body Partially Depleted MOSFET in a Delta-Sigma Loop

Maher Kayal, Jean-Michel Sallese, Louis Harik

Standard techniques used for measuring the photocurrent of an SOI phototransistor have failed due to two main reasons: the first being the low signal-to-noise ratio and the second being the slow transient. In this paper, the partially depleted silicon on i ...

Institute of Electrical and Electronics Engineers2009

SOI digital pixel sensor based on charge pumping

Maher Kayal, Jean-Michel Sallese, Louis Harik

In this paper, a digital pixel sensor in SOl is presented. The active part is a partially depleted Sol phototransistor. The technique elaborated in [I] was designed and implemented. Moreover, we took advantage of some of the characteristics of the floating ...

IEEE Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2009

Delta-sigma loop based on charge pumping in SOI optical sensor

Maher Kayal, Jean-Michel Sallese, Louis Harik

In this paper, the partially depleted SOI phototransistor has been used as a light intensity sensor. A pixel implementing the technique elaborated in [1] was designed and implemented on SOI technology. The circuit implements a first order delta-sigma modul ...

2008

Optical sensor using a floating body SOI MOSFET in the Delta-sigma loop

Maher Kayal, Jean-Michel Sallese, Louis Harik

In this paper, the partially depleted SOI phototransistor has been used as a light intensity sensor. A pixel implementing the technique elaborated in [1] was designed and implemented on SOI technology. The circuit implements a first order Delta-sigma modul ...

2008

Transient charge pumping as an efficient technique to measure low light intensity with PD SOI MOSFET

Maher Kayal, Jean-Michel Sallese, Louis Harik

In this paper, we present a new method to measure light intensity in a floating body partially depleted SOI MOSFET. The photo-generated charge density in the MOSFET is converted into a charge pumping frequency needed to maintain the drain current at a cons ...

2008

Transient charge pumping as a new technique for a higher sensitivity SOI MOSFET photodetector

Maher Kayal, Jean-Michel Sallese, Louis Harik

In this paper, we have used the partially depleted SOI MOSFET to measure the intensity of light. The charge pumping technique was used to get rid of the photogenerated carriers in the body in an attempt to keep the drain current constant. Using this techni ...

2008

Electrical model of a single pixel SOI phototransistor relying on the transient charge pumping technique

Maher Kayal, Jean-Michel Sallese, Louis Harik

In this paper a floating body partially depleted SOI MOSFET used to measure light intensity using the transient charge pumping [1] is modeled through an equivalent electrical circuit. Essentially, photogenerated charges of the MOSFET are converted into a c ...

2007

Capacitorless 1T DRAM sensing scheme with automatic reference generation

Maher Kayal, Michel Declercq, Marc Pastre, Serguei Okhonin, Louis Harik

To perform a current sensing in capacitorless 1-transistor (IT) DRAMs on SOI, we have developed a sensing scheme with automatic reference generation. The reference current is generated by an adjustable current source. The electrical calibration of the refe ...

2006