Flexible Control of Two-Channel Transmission and Group Delay in an Optomechanical System with Double Quantum Dots Driven by External Field [PDF]
Nanomaterials, 2021 With the presence of a driving field applied to double quantum dots and a control field applied on the cavity, the transmission performance and group delay effect of a probe field have been theoretically studied in a hybrid optomechanical system (HOMS ...
Faqiang Wang +4 more
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Impact of Nonlocality on Group Delay and Reflective Behavior Near Surface Plasmon Resonances in Otto Structure [PDF]
Nanomaterials, 2021 In this work, we study the effects of nonlocality on the optical response near surface plasmon resonance of the Otto structure, and such nonlocality is considered in the hydrodynamic model.
Lin Wang +3 more
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Method for Automatic Estimation of Instantaneous Frequency and Group Delay in Time–Frequency Distributions with Application in EEG Seizure Signals Analysis [PDF]
Sensors, 2023 Instantaneous frequency (IF) is commonly used in the analysis of electroencephalogram (EEG) signals to detect oscillatory-type seizures. However, IF cannot be used to analyze seizures that appear as spikes.
Vedran Jurdana +3 more
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Switchable Negative Group Delay Based on Sandwich Topological Protection Structure in Terahertz Band [PDF]
NanomaterialsA switchable enhancement group delay in the terahertz band based on a novel sandwich topology protection structure with graphene is proposed in this paper.
Jiao Xu +4 more
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Temporal Stability of GPS Transmitter Group Delay Variations [PDF]
Sensors, 2018 The code observable of global navigation satellite systems (GNSS) is influenced by group delay variations (GDV) of transmitter and receiver antennas. For the Global Positioning System (GPS), the variations can sum up to 1 m in the ionosphere-free linear ...
Susanne Beer, Lambert Wanninger
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Audibility of Group-Delay Equalization [PDF]
IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2021 This paper discusses the audibility of group-delay variations. Previous research has found limits of audibility as a function of frequency for different test signals, but extracting the tolerance for group delay to help audio reproduction system designers is hard.
Makivirta, Aki +3 more
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Local phase center hodograph of radiating element’s navigation antenna Glonass
Космические аппараты и технологии, 2022 The main methods for the determination of the object position using code phase and signal carrier phase measurements are given. An accuracy of pseudorange measurements of both carrier phase and group delay code signal depends on local phase center ...
N. V. Morozov +2 more
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Negative group delay of reflected Weyl quasiparticles
New Journal of Physics, 2021 When an electron is incident from a Weyl material to an insulator and totally reflected, it suffers a reflection group delay and a reflection shift (Goos–Hänchen and/or Imbert–Fedorov shifts). We found the group delay is negative for half of the incident
Mou Yang, Hai-Yan Li, Rui-Qiang Wang
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Anticipation and negative group delay in a retina [PDF]
Physical Review E, 2021 The mechanism of negative group delay (NGD) is used to understand the anticipatory capability of a retina. Experiments with retinas from bull frogs are performed to compare with the predictions of the NGD model. In particulars, whole field stochastic stimulation with various time correlations are used to probe anticipatory responses from the retina. We
Po-Yu Chou +5 more
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A Nonlinear Optimization Design Algorithm for Nearly Linear-Phase 2D IIR Digital Filters
Signals, 2023 In this paper, a new optimization method for the design of nearly linear-phase two-dimensional infinite impulse (2D IIR) digital filters with a separable denominator is proposed.
Abdussalam Omar +3 more
doaj +1 more source