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Electron Spin Resonance detectors from 400 MHz to 360 GHz

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This work presents an ultra-low power oscillator designed to target different contexts, such as crystal-assisted time keeping, reference oscillator to optimize the always on domain of a microcontroller or wake-up timer. This oscillator enables ultra-low po ...

Ieee2016

Graphene Quantum Capacitors for High Frequency Tunable Analog Applications

Juan Ramon Mosig, Mihai Adrian Ionescu, Clara-Fausta Moldovan, Michele Tamagnone, Wolfgang Amadeus Vitale, Pankaj Sharma

Graphene quantum capacitors (GQC) are demonstrated to be enablers of radio-frequency (RF) functions through voltage-tuning of their capacitance. We show that GQC complements MEMS and MOSFETs in terms of performance for high frequency analog applications an ...

American Chemical Society2016

Design and Implementation of A Rail-to-Rail 460-kS/s 10-bit SAR ADC for the Power-Efficient Capacitance Measurement

Catherine Dehollain, Shenjie Wang

This paper presents the design and implementation of a rail-to-rail 460-kS/s 10-bit successive approximation register analog-to-digital converter (ADC) for the power-efficient capacitance measurement. The specifications of ADC are optimized at system level ...

Institute of Electrical and Electronics Engineers2015

Cryogenic single chip electron spin resonance detectors

Gabriele Gualco

Methods based on the electron spin resonance (ESR) phenomenon are used to study paramagnetic systems at temperatures that ranges from 1000 to below 1 K. Commercially available spectrometers achieve spin sensitivities in the order of 10^(10) spins/¿Hz at ro ...

EPFL2015

A correlated multiple sampling passive switched capacitor circuit for low light CMOS image sensors

Christian Enz, Assim Boukhayma

After a brief review of the principle of correlated multiple sampling (CMS) and its implementation techniques in CIS readout chains, a simple CMS passive circuit that (i) requires no additional active circuitry, (ii) has no impact on the output dynamic ran ...

IEEE2015

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We report on the design and characterization of a single-chip electron spin resonance detector, operating at a frequency of about 20 GHz and in a temperature range extending at least from 300 K down to 4 K. The detector consists of an LC oscillator formed ...

Elsevier2014

A low power SAR logic-based resistive sensor readout circuit is proposed. A high sensitivity thermistor is used for local temperature measurements. The need for a low-noise front-end voltage amplifier is avoided by employing time-domain operation. In each ...

Institute of Electrical and Electronics Engineers2014

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We report on the experimental observation of oscillation frequency jumps in microwave LC oscillators fabricated using standard complementary metal-oxide-semiconductor technologies. The LC oscillators, operating at a frequency of about 20 GHz, consist of a ...

American Institute of Physics2014

Hybrid MOS-PN photodiode with positive feedback for pulse-modulation imaging

Maher Kayal, Adil Koukab, Denis Sallin

A new type of CMOS compatible photodetector, exhibiting intrinsic light-to-time conversion, is proposed. Its main objective is to start the time-to-digital conversion directly at its output, thereby avoiding the cumbersome analog processing. The operation ...

Optical Society of America2014

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We demonstrate theoretically and experimentally the possibility to achieve the strong coupling regime at room temperature with a microwave electronic oscillator coupled with an ensemble of electron spins. The coupled system shows bistable behaviour, with a ...

Elsevier2013