Analysis of EM penetration into and scattering by electrically large open waveguide cavities using Gaussian beam shooting
Article Abstract:
Electrically large and perfectly conducting, open-ended, nonuniform waveguide cavities that have gradually varying wall curvature are electromagnetically coupled into and scattered by analysis with a Gaussian beam (GB) shooting method. Straight and annular perfectly conducting waveguide sections make up two-dimensional open waveguide cavity geometries and are terminated by a planar perfect conductor. Solving the problem of representing high frequency electromagnetic (EM) fields propagating within waveguides of arbitrary shape is essential for coping with EM scattering. The GB field basis functions represent and track fields coupled from the incident wave into the cavity region. With the method presented, GBs need only be tracked once within the cavity if no excitations or direction changes of incidence and scattering occur.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1991
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Novel dielectric waveguide components - microwave applications of new ceramic materials
Article Abstract:
Dielectric-waveguide components with metallized surfaces are described. Microwave rectangular waveguide can be used to realize many components when conventional waveguide filled with dielectrics of high dielectric constant are considered. Conventional waveguide components have a lower loss than the equivalent coaxial guide components, and the dielectric-filled counterparts have nearly perfect magnetic walls. Surface-mountable components must be attained and incorporated into printed circuit boards to achieve a practical advantage; translation of the components into strip line is studied, and the possibility of realizing the components is examined one by one. Among the components studied are resonators and various filters.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1991
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High-frequency techniques for antenna analysis
Article Abstract:
Several high-frequency methods for accurately and efficiently analyzing the electromagnetic radiation from antennas in their host environment are explored. The techniques used in this analysis can be usefully applied to antenna design because they provide insight into antenna radiation mechanisms. The high-frequency techniques described can be extremely useful in configuring practical antenna applications. Among the practical uses to which high-frequency analysis can be put include open-ended waveguide antennas, reflector and horn antennas and antennas on spacecraft and aircraft. The combination of high-frequency analysis with other methods to create hybrid techniques for solving a variety of problems is also described.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1992
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