Results 91 to 100 of about 144,693 (302)

Observation of Dislocation Bound States and Skin Effects in Non‐Hermitian Chern Insulators

open access: yesAdvanced Materials, EarlyView.
Experimental observation of the dislocation‐induced bound states and skin effects is demonstrated in a line‐gap non‐Hermitian acoustic lattice. By utilizing active meta‐atoms to measure the full complex spectrum and biorthogonal eigenstates, the study reveals the exceptional‐point‐driven melting of defect modes.
Jia‐Xin Zhong, Bitan Roy, Yun Jing
wiley   +1 more source

Phase Length Optical Phase-Locked-Loop Sensor [PDF]

open access: yes
The invention is a device that provides a high resolution measurement of the change in optical phase length from the device optical system source to an optical reflector.
Heyman, Joseph S.
core   +1 more source

Electronic phase-locked-loop speed control system is stable [PDF]

open access: yes, 1966
Phase locked-loop circuit is used for playback motors in digital tape recorders where the reproducer output remains in exact synchronism with an external reference clock over extended periods.
Stone, F. A.
core   +1 more source

Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators

open access: yesAdvanced Materials, EarlyView.
Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng   +11 more
wiley   +1 more source

The FDM demodulating characteristics of non-linear phase-locked loops [PDF]

open access: yes
FDM demodulation characteristics of nonlinear phase locked ...
Carden, F. F.   +2 more
core   +1 more source

Photo‐Reconfigurable Supercoupling Induced Transparency in On‐Chip Topological Edge State Cavities

open access: yesAdvanced Materials, EarlyView.
A novel supercoupling induced transparency (SIT) is demonstrated in a valley‐Hall photonic crystal. The valley vortices enable the supercoupling between a leaky and a guided topological edge state cavity even across a distance of 4.3 wavelengths, inducing a transparency window with negligible reflection.
Wenhao Wang, Ranjan Singh
wiley   +1 more source

Extending locked range of digital phase-locked loop by prediction estimation of states

open access: yesTongxin xuebao, 2008
A method to extend locked range of the positive zero crossing detection digital phase-locked loop(ZC-DPLL) was proposed.The nonlinear dynamical model of phase error of a non-controlled DPLL is firstly built,linearation predic-tion estimation of phase ...
ZHAO Yi-bo1   +3 more
doaj   +2 more sources

Estimator Parameter Tegangan Jaringan Tiga Fasa Berbasis D-SOGI PLL

open access: yesMajalah Ilmiah Teknologi Elektro, 2017
Phase locked loop (PLL) adalah sebuah sistem umpan balik yang memegang peran penting dalam sistem-sistem konverter terkoneksi jaringan listrik. Fungsi utama PLL adalah mendapatkan beragam informasi parameter jaringan yaitu seperti phase dan magnitude ...
Iwan Setiawan   +3 more
doaj   +1 more source

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