Publications related to Valve amplifier

Energy Efficient Low-Noise Neural Recording Amplifier With Enhanced Noise Efficiency Factor

Alexandre Schmid, Yusuf Leblebici, Vahid Majidzadeh Bafar

This paper presents a neural recording amplifier array suitable for large-scale integration with multielectrode arrays in very low-power microelectronic cortical implants. The proposed amplifier is one of the most energy-efficient structures reported to da ...

2011

Simultaneously driven linear and nonlinear spatial encoding fields in MRI

Daniel Gallichan, John Hennig

Spatial encoding in MRI is conventionally achieved by the application of switchable linear encoding fields. The general concept of the recently introduced PatLoc (Parallel Imaging Technique using Localized Gradients) encoding is to use nonlinear fields to ...

Wiley-Blackwell2011

Inductive Power Link for a Wireless Cortical Implant With Two-Body Packaging

Catherine Dehollain, Michel Declercq, Kanber Mithat Silay

This paper presents an inductive power link for remote powering of a wireless cortical implant. The link includes a Class-E power amplifier, a gate driver, an inductive link, and an integrated rectifier. The coils of the inductive link are designed and opt ...

Institute of Electrical and Electronics Engineers2011

Inductive Power Link for a Wireless Cortical Implant with Biocompatible Packaging

Catherine Dehollain, Michel Declercq, Kanber Mithat Silay

This article presents an inductive power link for a cortical implant. The link includes a Class-E power amplifier, an inductive link, a matching network, and a rectifier. The coils of the inductive link are designed and optimized for a distance of 10mm (sc ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2010

Low-distortion switched-capacitor event-driven analogue to-digital converter

Alexandre Schmid, Yusuf Leblebici, Vahid Majidzadeh Bafar

An event-driven analogue-to-digital converter (ADC) architecture is proposed. The proposed architecture has less sensitivity to amplifier and DAC nonlinearity, and reduces the swing and dynamic common-mode range requirement of the operational transconducta ...

Institution of Engineering and Technology2010

AM Modulation-based CMOS Readout Circuit for High-density Microelectrode Arrays

Alexandre Schmid, Yusuf Leblebici, Neil Joye

An innovative readout channel, based on analog amplitude modulation (AM) of the signals recorded by each electrode, is developed for high-density CMOS-based MEAs. This new readout method enables the design of a low-noise amplification stage while still rea ...

2010

205-GHz (Al,In)N/GaN HEMTs

Nicolas Grandjean, Jean-François Carlin, Eric Feltin, Marcus Gonschorek

We report 55-nm gate AlInN/GaN high-electron-mobility transistors (HEMTs) featuring a short-circuit current gain cutoff frequency of f(T) = 205 GHz at room temperature, a new record for GaN-based HEMTs. The devices source a maximum current density of 2.3 A ...

Institute of Electrical and Electronics Engineers2010

A discrete-components impulse-radio UWB Low-Noise Amplifier with voltage controlled-gain

Catherine Dehollain, Edmund James Colli-Vignarelli

We describe an Ultra-Wide Band Low-Noise Amplifier (LNA) with a variable gain that works in the 4.0 GHz to 4.5 GHz frequency range and is made with off-the-shelf discrete components. This LNA has a 30 dB variable gain and a noise figure of 2.2 dB. It was i ...

2010

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Valve amplifier

Energy Efficient Low-Noise Neural Recording Amplifier With Enhanced Noise Efficiency Factor

Simultaneously driven linear and nonlinear spatial encoding fields in MRI

Inductive Power Link for a Wireless Cortical Implant With Two-Body Packaging

Inductive Power Link for a Wireless Cortical Implant with Biocompatible Packaging

Low-distortion switched-capacitor event-driven analogue to-digital converter

AM Modulation-based CMOS Readout Circuit for High-density Microelectrode Arrays

205-GHz (Al,In)N/GaN HEMTs

A discrete-components impulse-radio UWB Low-Noise Amplifier with voltage controlled-gain

High-efficiency dynamic supply CMOS audio power amplifier for low-power applications

Shunt loudspeaker techniques for use as liners for engine nacelles

Graph Chatbot

Chat with Graph Search

Low-distortion switched-capacitor event-driven analogue to-digital converter

Inductive Power Link for a Wireless Cortical Implant with Biocompatible Packaging

AM Modulation-based CMOS Readout Circuit for High-density Microelectrode Arrays

Inductive Power Link for a Wireless Cortical Implant With Two-Body Packaging

Shunt loudspeaker techniques for use as liners for engine nacelles

205-GHz (Al,In)N/GaN HEMTs

A discrete-components impulse-radio UWB Low-Noise Amplifier with voltage controlled-gain

High-efficiency dynamic supply CMOS audio power amplifier for low-power applications

Energy Efficient Low-Noise Neural Recording Amplifier With Enhanced Noise Efficiency Factor

Simultaneously driven linear and nonlinear spatial encoding fields in MRI