Results 41 to 50 of about 313,914 (301)

Analysis of crosstalk and field coupling to lossy MTL's in a SPICE environment [PDF]

, 1996
This paper proposes a circuit model for lossy multiconductor transmission lines (MTLs) suitable for implementation in modern SPICE simulators, as well as in any simulator supporting differential operators.
Dilecce, B., Dilecce B., Maio, Ivano Adolfo, Canavero, Flavio   +3 more
core   +1 more source

Control Strategy for Improving Active Frequency Support Capability of Offshore Wind Farm

Shanghai Jiaotong Daxue xuebao
In low frequency alternating current (AC) transmission systems, offshore wind farm is unable to respond to changes in onshore grid frequency in a timely manner due to frequency decoupling and signal transmission delays between the offshore wind power ...
LI Yibo, ZHOU Qian, ZHU Dandan, JIANG Yafeng, WU Qiuwei, CHEN Jian
doaj   +1 more source

Impact of Catheter Ablation on Sleep Quality and Relationship Between Sleep Stability and Recurrence of Paroxysmal Atrial Fibrillation After Successful Ablation: 24‐Hour Holter‐Based Cardiopulmonary Coupling Analysis

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2020
Background Sleep fragmentation and sleep apnea are common in patients with atrial fibrillation (AF). We investigated the impact of radio‐frequency catheter ablation (RFCA) on sleep quality in patients with paroxysmal AF and the effect of a change in ...
Woohyeun Kim, Jin Oh Na, Robert J. Thomas, Won Young Jang, Dong Oh Kang, Yoonjee Park, Jah Yeon Choi, Seung‐Young Roh, Cheol Ung Choi, Jin Won Kim, Eung Ju Kim, Seung‐Woon Rha, Chang Gyu Park, Hong Seog Seo, Hong Euy Lim   +14 more
doaj   +1 more source

Self-Mixing Signal Characteristics of Complex-Coupled Distributed-Feedback Terahertz Quantum-Cascade Lasers

Frontiers in Physics, 2021
Self-mixing interference (SMI) in terahertz quantum cascade lasers (THz QCLs) is one of the significant approaches for coherent THz imaging and sensing techniques.
Lei Ge, Ning Yang, Jian Wang, Weidong Chu, Suqing Duan, Yan Xie, Yingxin Wang, Lianhe Li, Edmund Linfield   +8 more
doaj   +1 more source

Coupling Impedance Modeling Analysis of Grid-Connected Inverters Under Three-Phase Voltage Unbalance

Energies
Under the condition of asymmetric system voltage, grid-connected inverters exhibit obvious sequence impedance frequency coupling characteristics, which can easily lead to resonance and the misoperation of protection and control devices.
Yang Liu, Haidong Yu, Qihang Wu, Bin Wang, Lisheng Li, Wenbin Liu   +5 more
doaj   +1 more source

Parametric estimation of cross-frequency coupling

Journal of Neuroscience Methods, 2015
Growing experimental evidence suggests an important role for cross-frequency coupling in neural processing, in particular for phase-amplitude coupling (PAC). Although the details of methods to detect PAC may vary, a common procedure to estimate the significance level is the comparison of observed values to those of at least 100 surrogate time series ...
van Wijk, BC, Jha, A, Penny, W, Litvak, V   +3 more
openaire   +3 more sources

Plasma–neutral coupling allows electrostatic ion cyclotron waves to propagate below ion cyclotron frequency [PDF]

, 2022
0000-0003-3627-6060The effect of ion–neutral collisions on the propagation characteristics of electrostatic ion cyclotron (EIC) waves in a partially ionized plasma is investigated.
TERASAKA, Kenichiro, YOSHIMURA, Shinji, S. Yoshimura, K. Terasaka   +3 more
core   +2 more sources

High-frequency Resonance Analysis and Impedance Reshaping Control of MMC-HVDC System Based on Frequency Coupling Impedance Model

Journal of Modern Power Systems and Clean Energy
In recent years, high-frequency resonance (HFR) events occurred in several modular multilevel converter based high-voltage direct current (MMC-HVDC) projects. The time delay of an MMC-HVDC system is the critical factor that induces HFR.
Juanjuan Wang, Wei Chen, Yuekun Liu, Chuang Fu, Yunming Ye, Junjie Feng   +5 more
doaj   +1 more source

Localisation of defects with time and frequency measurements using pulsed arrays [PDF]

, 2014
The frequency dependent directivity of the periodic permanent magnet transducer is to used extract information about the position of any discontinuities present in a sample. Two approaches are used; narrowband excitation, and broadband pulsed generation.
Dixon, Steve, Hill, Samuel Joseph, Hill, Samuel, Dixon, Steve M.   +3 more
core   +1 more source

Misidentifications of specific forms of cross-frequency coupling: three warnings

Frontiers in Neuroscience, 2015
Cross-frequency coupling between neural oscillations has received increased attention over the last decade, as it is believed to underlie a number of cognitive operations in different brain systems.
Alexandre eHYAFIL, Alexandre eHYAFIL
doaj   +1 more source