Results 11 to 20 of about 1,364,588 (253)

Beta1 subunits enable fentanyl-induced BK channel activation and opioid regulation of cerebral artery diameter. [PDF]

FEBS Open Bio
During the current opioid crisis, the majority of overdose deaths are attributed to ultra‐potent synthetic opioids, such as fentanyl. While fentanyl exerts its action via opioid receptors, we propose that potassium channels in the brain blood vessels may also sense fentanyl.
Thapa S, Nooh M, Geddati A, Dopico A, Bukiya AN.   +4 more
europepmc   +2 more sources

Model-based predictive adaptive delta modulation

, 2007
This paper presents a new technique in digital communications that is called model-based-predictive adaptive-delta-modulation (MBP-ADM). MBP-ADM uses system identification tools to identify a model of the signal which is used for prediction.
Veres, S.M., Al-Korj, Anas
core   +3 more sources

Force feedback linearization for higher-order electromechanical sigma-delta modulators. [PDF]

, 2005
A higher-order electromechanical sigma–delta modulator can greatly improve the signal-to-noise ratio compared with a second-order loop that only uses the sensing element as a loop filter.
Redman-White, William, Dong, Yufeng, Kraft, Michael, Dong, Redman-White, W.   +4 more
core   +1 more source

Microgyroscope control system using a high-order band-pass continuous-time sigma-delta modulator [PDF]

, 2007
The paper presents a novel 6th order continuous-time, force-feedback band-pass sigma-delta modulator control system for the detection mode of micromachined vibratory gyroscopes.
Y. Dong, Redman-White, William, M. Kraft, Redman-White, W., Dong, Y., N. Hedenstierna, Dong, Yufeng, Kraft, Michaël, Kraft, M., W. Redman-White, Hedenstierna, N.   +10 more
core   +1 more source

Contribución al modelado y diseño de moduladores sigma-delta en tiempo continuo de baja relación de sobremuestreo y bajo consumo de potencia [PDF]

, 2005
Los moduladores Sigma-Delta de tiempo continuo constituyen una técnica de conversión de señal analógica a señal digital que resulta ser una alternativa interesante para aplicaciones de alta velocidad.
Patón Álvarez, Susana
core   +3 more sources

Contribution to the design of continuous -time Sigma - Delta Modulators based on time delay elements [PDF]

, 2008
The research carried out in this thesis is focused in the development of a new class of data converters for digital radio. There are two main architectures for communication receivers which perform a digital demodulation.
Prefasi Sen, Enrique José
core   +1 more source

Performance Scrutiny of Two Control Schemes Based on DSM and HB in Active Power Filter [PDF]

Journal of Operation and Automation in Power Engineering, 2014
This paper presents a comparative analysis between two current control strategies, constant source power and generalized Fryze current, used in Active Power Filter (APF) applications having three different modulation methods. The Hysteresis Band (HB) and
R. Kazemzadeh, E. Najafi Aghdam, M. Fallah, Y. Hashemi   +3 more
doaj  

Delta Sigma Modulation and Demodulation

, 2022
Contains results from a laboratory experiment on delta-sigma modulation/demodulation. 
Ara Abdulsatar Assim (12512428)
core   +1 more source

A ΣΔ Closed-Loop Interface for a MEMS Accelerometer with Digital Built-In Self-Test Function

Micromachines, 2018
Sigma-delta (ΣΔ) closed-loop operation is the best candidate for realizing the interface circuit of MEMS accelerometers. However, stability and reliability problems are still the main obstacles hindering its further development for high-end ...
Dongliang Chen, Xiaowei Liu, Liang Yin, Yinhang Wang, Zhaohe Shi, Guorui Zhang   +5 more
doaj   +1 more source

A Driving Technique for AC-AC Direct Matrix Converters Based on Sigma-Delta Modulation

Energies, 2019
Direct conversion of AC power between three-phase systems operating at different frequencies can be achieved using solid-state circuits known as matrix converters.
Simone Orcioni, Giorgio Biagetti, Paolo Crippa, Laura Falaschetti   +3 more
doaj   +1 more source