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New electromagnetic resonance effects associated with cavity‐backed apertures
Author(s) -
Ziolkowski Richard W.
Publication year - 1987
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/rs022i004p00449
Subject(s) - aperture (computer memory) , resonance (particle physics) , optics , scattering , physics , electromagnetic field , cavity wall , materials science , acoustics , atomic physics , quantum mechanics , composite material
A number of canonical problems that describe the coupling of electromagnetic fields through apertures into enclosed regions have been solved. The scattering data generated by these cavity‐backed aperture solutions share a common property: they are dominated by resonance features closely connected to the presence of the cavity. The behavior of these cavity‐backed aperture resonance features has been characterized for variations in frequencies, angles of incidence, look angles, aperture sizes, and interior object properties. It has been found that the scattering cross sections contain information about the interior of the cavity.