Results 41 to 50 of about 220,278 (302)

Configuration of smart phase-swapping switches in low-voltage distribution systems based on sequenced participation indices

Measurement + Control, 2020
The smart phase-swapping switches are used to rapidly change the phases of single-phase loads online in low-voltage distribution systems. They can reduce the three-phase imbalance indices.
Lixia Cao, Guoliang Feng, Xingong Cheng, Luhao Wang   +3 more
doaj   +1 more source

A Channel Imbalance Calibration Scheme with Distributed Targets for Circular Quad-Polarization SAR with Reciprocal Crosstalk

Remote Sensing, 2023
As polarimetric antennas can be isolated through excellent electronic frameworks in circular quad-polarization (CQP) synthetic aperture radar (SAR) systems, cross-polarization (x-pol) and co-polarization (co-pol) channel imbalances are more challenging ...
Xingjie Zhao, Yunkai Deng, Heng Zhang, Xiuqing Liu   +3 more
doaj   +1 more source

Electrical neutrality and $$\beta $$ β -equilibrium conditions in dense quark matter: generation of charged pion condensation by chiral imbalance

European Physical Journal C: Particles and Fields, 2020
The phase diagram of dense quark matter with chiral imbalance is considered with the conditions of electric neutrality and $$\beta $$ β -equilibrium. It has been shown recently that chiral imbalance can generate charged pion condensation (PC) in dense ...
T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov   +2 more
doaj   +1 more source

A Frequency-Domain I/Q Imbalance Calibration Algorithm for Wideband Direct Conversion Receivers Using Low-Cost Compensator

IEEE Access, 2023
The amplitude and phase imbalances of the in-phase (I) and quadrature (Q) branches inherent in the direct conversion receiver structure cause the generation of image frequency interference signals.
Xiaoye Peng, Faxin Yu, Zhiyu Wang, Jiarui Liu, Chenge Wang, Jing Wang   +5 more
doaj   +1 more source

Early detection of voltage imbalances in three-phase induction motors [PDF]

Proceedings of the 2005, American Control Conference, 2005., 2005
Online monitoring of induction motor health is of increased interest, as the industrial processes that depend on the motors become more complex and as performance to cost ratio of monitoring technology (e.g. sensors, microprocessors) has increased dramatically.
Rohan Samsi, Venkatesh Rajagopalan, Jeffrey Mayer, Asok Ray   +3 more
openaire   +1 more source

In-Service Blind Transceiver IQ Imbalance and Skew Monitoring in Long-Haul Non-Dispersion Managed Coherent Optical Systems

IEEE Access, 2019
Transceiver imbalance can rapidly degrade system performance, especially when high symbol rate, high modulation order and low roll-off pulse shape are used.
Cheng Ju, Na Liu, Changhong Li
doaj   +1 more source

Gain, Phase Imbalance, and Phase Noise Effects on Error Vector Magnitude

IEEE Transactions on Vehicular Technology, 2004
The error vector magnitude (EVM) is extensively applied as a measure of communication systems' performance. In this paper, the effects of gain, phase imbalance, and phase noise on EVM are examined. The work is focused on single-carrier, linear, and memoryless modulated signals, such as phase-shift keying and quadrature amplitude modulation (QAM).
openaire   +2 more sources

Influence of quadrature transformation imbalance on the noise immunity of signal reception with amplitude-phase shift keying

Российский технологический журнал
Objectives. At the present time, amplitude-phase shift keyed (APSK) signals are actively used in satellite communication systems. In particular, they are applied in systems which operate in a limited radio frequency spectrum with increased data ...
G. V. Kulikov, X. Kh. Dang
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

Evaluation of Phase Imbalance Compensation for Mitigating DFIG-Series Capacitor Interaction

Energies, 2020
The phase imbalance compensation concept is proposed in literature as an alternative way to mitigate classical subsynchronous resonance (SSR) problems in series-compensated transmission lines.
Vinay Sewdien, Jose Luis Rueda Torres, Mart van der Meijden   +2 more
doaj   +1 more source