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Temporal Readout Noise Analysis and Reduction Techniques for Low-Light CMOS Image Sensors

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CMOS pixels for subretinal implantable prothesis

Mihai Adrian Ionescu, Philippe Renaud, Marco Mazza

This work reports on the design, fabrication, and characterization of CMOS pixels for subretinal implants, which seems to be an effective way to recover visual capabilities in some types of blindness. Two possible approaches are presented for CMOS pixel im ...

2005

Virtual Sensor Design

Sabine Süsstrunk, Roberto Costantini

We present a virtual digital camera sensor, whose aim is to simulate a real (physical) image capturing sensor.To accomplish this task, the virtual sensor operates in two steps. First, it accepts a physical description of agiven scene and simulates the enti ...

2004

Low Noise CMOS Micro-Fluxgate Magnetometer

Radivoje Popovic, Pavel Kejik, Franck Vincent, Predrag Drljaca

We present a new two-axis fluxgate magnetometer fully integrated in CMOS technology. The magnetometer exhibits excellent sensitivity of 2700 V/T and the magnetic equivalent noise spectral density of 6nT/√Hz at 1 Hz. The total power consumption is as low as ...

2003

CMOS image sensors for subretinal implant system

Mihai Adrian Ionescu, Philippe Renaud, Marco Mazza

Visual capabilities recovery for some kind of illness is possible through subretinal implantable device stimulation. Two possible approaches for retinal pixel are proposed, fabricated in 0.35mum CMOS, tested and compared including electronic response on a ...

2003

High performance solar blind detectors based on AlGaN grown by MBE and MOCVD

Nicolas Grandjean, Mauro Mosca

Solar blind detectors based on AlGaN grown by Molecular Beam Epitaxy and Metal Organic Vapor Phase Epitaxy have been fabricated and characterized. Metal Semiconductor Metal (MSM) detectors and vertical Schottky detectors have been realized, with a design t ...

Materials Research Society2003

CMOS pixel for subretinal implantable prothesis

Mihai Adrian Ionescu, Philippe Renaud, Marco Mazza

Visual capabilities recovery for some kind of illness is possible through subretinal implantable device stimulation. Two possible architectures for retinal pixel are proposed, fabricated in 0.35mum CMOS and compared, including evaluation of electronic resp ...

2003

An Analysis of Flicker Noise Rejection in Low-Power and Low-Voltage CMOS Mixers

Christian Enz

The sensitivity of RF CMOS receivers using a direct conversion or a low-IF architecture is strongly affected by flicker noise. This paper gives theoretical guidelines to predict the flicker noise in Gilbert-cell mixers. The conversion gain, the equivalent ...

2001

Pixel size limit in holographic memories

Demetri Psaltis, Wei Liu

The bandwidth of holographic recording in LiNbO3 (Fe doped) in the 90 degrees geometry is studied theoretically and experimentally. The wide holographic bandwidth of LiNbO3 makes it possible to record submicrometer pixels and reconstruct them by phase conj ...

1999

A 1.3V low-power 430 MHz front-end using a standard digital CMOS process

Christian Enz, Maher Kayal

A low-power and low-voltage (LP/LV) RF front-end operating at 430MHz and implemented in a standard 0.5 mu m digital CMOS process is described. Specific LP/LV bias techniques and design tradeoffs are discussed and their application to the design of a fully ...

1998

An 8-bit low-power ADC array for CMOS image sensors

Steve Tanner, Michael Ansorge, Alexander Heubi

The paper presents an original analog-to-digital converter (ADC) array meeting the constraining requirements in resolution, speed, size, and low power consumption of high-performance low-cost video cameras. The converter array is based on ADC cells relying ...

1998