Articles with "modal expansion" as a keyword



Application of modal expansion method for sound prediction in enclosed spaces subjected to boundary excitation

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Published in 2021 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2021.116041

Abstract: Abstract In this paper, the steady-state and transient sound fields inside 3D enclosed spaces were examined theoretically using the modal expansion method. An analytic formula for the Green’s function was derived allowing to predict the… read more here.

Keywords: expansion method; enclosed spaces; sound; excitation ... See more keywords

Modal Expansion Approach for Electromagnetic Propagation in Street Canyons

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Published in 2019 at "IEEE Transactions on Antennas and Propagation"

DOI: 10.1109/tap.2018.2883683

Abstract: We present a simple and efficient model to compute electromagnetic (EM) propagation in urban street canyons, when transmitting and receiving antennas are located below the rooftop level. A parallel-plate dielectric hollow waveguide model of the… read more here.

Keywords: propagation; street; modal expansion; expansion approach ... See more keywords

Computation Theory of Large-Scale Partially Coherent Imaging by the Modified Modal Expansion Method

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Published in 2024 at "Photonics"

DOI: 10.3390/photonics11070668

Abstract: The numerical calculation of partially coherent imaging involves a fourfold integral, which is numerically complex and impracticable to be calculated directly. The use of coherent-mode decomposition (CMD) can make this problem more manageable but finding… read more here.

Keywords: method; modal expansion; partially coherent; expansion ... See more keywords