Results 11 to 20 of about 3,066,308 (139)
Nonparametric frequency domain analysis of nonstationary multivariate time series [PDF]
, 2002 We analyse the properties of nonparametric spectral estimates when applied to long memory and trending nonstationary multiple time series. We show that they estimate consistently a generalized or pseudo-spectral density matrix at frequencies both close ...
Velasco, Carlos
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Fast finite difference time domain analysis of microstrip patch antennas [PDF]
, 1991 Although the finite-difference-time-domain method has been successfully used to model microstrip-fed patch antennas, this has been achieved using uniform grids.
Daniel, EM, Railton, CJ
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On the Time Domain Error Caused By the Frequency Domain Sampling Rate in a Reverberation Chamber
IEEE Access, 2019 The time domain (TD) response of a reverberation chamber (RC) can be obtained from the inverse Fourier transform of the measured S-parameters in the frequency domain (FD).
Jianhua Xu, Yongjiu Zhao, Qian Xu
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工程科学学报, 2018 In the harsh marine environment, the traditional aluminum alloy coating has difficulty meeting the requirements of use, which can affect equipment performance.
SUN Xiao-feng +4 more
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Time domain analysis of a wideband common-mode suppression filter for bent interconnects [PDF]
, 2011 A technique to efficiently reduce differential-to-common mode conversion occuring at a bend discontinuity in coupled microstrip lines is investigated. Total signal integrity in the interconnect structure has been improved by minimizing the differential ...
De Zutter, Daniël +4 more
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Timescale Spectra in High Energy Astrophysics [PDF]
, 2002 A technique of timescale analysis performed directly in the time domain has been developed recently. We have applied the technique to studying rapid variabilities of hard X-rays from neutron star and black hole binaries, gamma-ray bursts and terrestrial ...
D Kazanas +6 more
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Comparison of Frequency Domain and Time-Domain Methods for Aeromechanical Analysis
International Journal of Rotating Machinery, 2016 Unsteady flow around an oscillating plate cascade and that through a single compressor rotor subject to vibration have been computationally studied, aimed at examining the predictive ability of two low fidelity frequency methods compared with a high ...
M. T. Rahmati
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Design and System Characterization of Ultra-Wideband Antennas With Multiple Band-Rejection
IEEE Access, 2017 This paper presents system modelling and characterization of multiple-band notched ultrawideband (UWB) antennas using the singularity expansion method (SEM).
Sajjad ur Rehman, Majeed A. S. Alkanhal
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Equivalence analysis of dielectric test methods in time domain and frequency domain
International Journal of Electrical Power & Energy SystemsWideband dielectric response is crucial for accurate assessment of insulation condition. However, time-domain measurements such as polarization and depolarization current (PDC) tests often lose high-frequency components, while frequency domain ...
Lin Du, Xin Li, Shixian Hui, Chao Xing
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Time Domain Vibration Analysis of an Ice Shelf
Journal of Marine Science and EngineeringA method is presented to calculate the vibrations of an ice shelf floating in shallow water under different boundary conditions. One condition is that there is no flux, which reduces all calculations and the other is that there is no pressure at the ...
Rehab Aljabri, Michael H. Meylan
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