2022/12/14 by Angèle Niclas, Niclas, Angèle, Laurent Seppecher +1
Engineering · #Antenna Design and Optimization #Electromagnetic Simulation and Numerical Methods #FOS: Mathematics #Geophysical Methods and Applications #Microwave Engineering and Waveguides #Numerical Analysis (math.NA) #Photonic and Optical Devices #Ultrasonics and Acoustic Wave Propagation
paper · pdf · doi:10.48550/arxiv.2212.07121
openalex publication_date 2022/12/14 · openalex created_date 2023/02/16 · openalex updated_date 2026/07/28
This article present a new method to reconstruct slowly varying width defects\nin 2D waveguides using one-side section measurements at locally resonant\nfrequencies. At these frequencies, locally resonant modes propagate in the\nwaveguide up to a "cut-off" position. In this particular point, the local width\nof the waveguide can be recovered. Given multi-frequency measurements taken on\na section of the waveguide, we perform an efficient layer stripping approach to\nrecover shape variations slice by slice. It provides an L infinite-stable\nmethod to reconstruct the width of a slowly monotonous varying waveguide. We\nvalidate this method on numerical data and discuss its limits.\n