Results 11 to 20 of about 106,125 (262)

Upregulation of transmitter release probability improves a conversion of synaptic analogue signals into neuronal digital spikes

open access: yesMolecular Brain, 2012
Action potentials at the neurons and graded signals at the synapses are primary codes in the brain. In terms of their functional interaction, the studies were focused on the influence of presynaptic spike patterns on synaptic activities.
Yu Jiandong, Qian Hao, Wang Jin-Hui
doaj   +2 more sources

Digital calibration technique based AC injection for continuous‐time sigma‐delta converters

open access: yesElectronics Letters, 2023
In this study, a digital calibration method applicable for a continuous‐time sigma‐delta analogue‐to‐digital converter is proposed using the AC injection technique.
Shengling Zhu, Lei Chen, Jie Su
doaj   +1 more source

Timing Jitter Analysis and Mitigation in Hybrid OFDM-DFMA PONs

open access: yesIEEE Photonics Journal, 2021
Hybrid orthogonal frequency division multiplexing-digital filter multiple access passive optical networks (OFDM-DFMA PONs) offer a cost-effective solution to the challenging requirements of next-generation optical access networks and 5G and beyond radio ...
Omaro Fawzi Abdelhamid Gonem   +2 more
doaj   +1 more source

Process and temperature robust time‐difference amplifier with analog calibration

open access: yesThe Journal of Engineering, 2022
An analogue calibration CMOS circuit for a time‐difference amplifier is presented and compared over a digital calibration scheme in terms of process and temperature variations.
Uriel A. Melo‐Pinzón   +1 more
doaj   +1 more source

Low Power, Compact Integrated Photonic Sampler Based on a Silicon Ring Modulator

open access: yesIEEE Photonics Journal, 2022
Sampling is the primary functional step of an analogue to digital conversion, required for sensing, measurement, signal processing, metrology, and various data communication applications. Here we present, for the first time, to the best of our knowledge,
Mohamed I. Hosni   +7 more
doaj   +1 more source

A 0.002‐mm2 8‐bit 1‐MS/s low‐power time‐based DAC (T‐DAC)

open access: yesIET Circuits, Devices and Systems, 2021
Digital‐to‐analogue converters (DACs) are essential blocks for interfacing the digital environment with the real world. A novel architecture, using a digital‐to‐time converter (DTC) and a time‐to‐voltage converter (TVC), is employed to form a low‐power ...
Ali H. Hassan   +4 more
doaj   +1 more source

An 8‐bit digital‐to‐time converter with pre‐skewing and time interpolation

open access: yesIET Circuits, Devices and Systems, 2021
This study presents an 8‐bit delay line digital‐to‐time converter (DTC) with pre‐skewing and digital time interpolation. Pre‐skewing that lowers the per‐stage‐delay of delay lines beyond that set by the chosen technology is investigated.
Daniel Junehee Lee   +3 more
doaj   +1 more source

Fully passive noise‐shaping successive approximation register analog‐to‐digital converter realizing 2 × gain without capacitor stacking

open access: yesElectronics Letters, 2023
The fully passive noise shaping (NS) successive approximation register (SAR) analog‐to‐digital converters (ADCs) are simple, operational transconductance amplifier (OTA) free and scaling friendly. Previous passive NS‐SAR ADCs rely on the multi‐path‐input
Xingshuai Zou, Jiaxin Liu, Qiang Li
doaj   +1 more source

Accurate Power-Efficient Format-Scalable Multi-Parallel Optical Digital-to-Analogue Conversion

open access: yesPhotonics, 2021
In optical transmitters generating multi-level constellations, optical modulators are preceded by Electronic Digital-to-Analog-Converters (eDAC). It is advantageous to use eDAC-free Optical Analog to Digital Converters (oDAC) to directly convert digital ...
Moshe Nazarathy, Ioannis Tomkos
doaj   +1 more source

New Method for Logarithmic Analogue-to-Digital Conversion Using Switched Capacitors with a Variable Logarithmic Base

open access: yes, 2023
This article is devoted to the development of a new method of logarithmic analogue-to-digital conversion using switched capacitors with a variable logarithmic base. The essence of the method and its implementation are presented.
Zbigniew Szcześniak   +5 more
core   +1 more source

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