Scattering of a surface wave incident on a nonuniform transition in surface reactance

2005 ◽  
Author(s):  
K. Park ◽  
R. King
Keyword(s):  
Surface Wave ◽  
Wave Incident ◽  
Surface Reactance

Scattering of a surface wave by a discontinuity in the surface reactance on a right angled wedge

1961 ◽  
Vol 14 (1) ◽  
pp. 35-48 ◽  
Author(s):  
F. C. Karal ◽  
S. N. Karp ◽  
Ta-Shing Chu ◽  
R. G. Kouyoumjian
Keyword(s):  
Surface Wave ◽  
Surface Reactance

Diffraction of a surface wave incident at an arbitrary angle on the edge of a plane

1966 ◽  
Vol 8 (1) ◽  
pp. 117-121
Author(s):  
M. S. Bobrovnikov ◽  
V. N. Ponomareva ◽  
V. G. Myshkin ◽  
R. P. Starovoitova
Keyword(s):  
Surface Wave ◽  
Wave Incident ◽  
Arbitrary Angle

scholarly journals Planar Modulated Reactance Surfaces for Endfire Antenna Applications

2021 ◽  
Vol 2015 (1) ◽  
pp. 012081
Author(s):  
Do-Hoon Kwon
Keyword(s):  
Surface Wave ◽  
Radiation Pattern ◽  
Spectral Range ◽  
Traveling Wave ◽  
Radiation Characteristics ◽  
Surface Reactance ◽  
Entire Spectral Range

Abstract Modulated reactance synthesis for planar impenetrable electromagnetic surfaces for endfire radiation characteristics is presented. It is based on aperture field synthesis over the entire spectral range, where the desired radiation pattern is prescribed by a traveling-wave current over the aperture. Carefully constructed auxiliary waves in the evanescent spectrum are added and the total aperture fields are optimized such that the entire aperture surface becomes pointwise reactive. The optimized aperture fields define the modulated surface reactance that realizes the desired pattern when excited by a feed surface wave. The reactance distribution may be realized as modulated metasurfaces.

Exit-surface wave reconstruction using a focal series

1992 ◽  
Vol 50 (2) ◽  
pp. 988-989
Author(s):  
W.J. de Ruijter ◽  
M.R. McCartney ◽  
David J. Smith ◽  
J.K. Weiss
Keyword(s):  
Surface Wave ◽  
Spherical Aberration ◽  
Data Extraction ◽  
High Sensitivity ◽  
Geometric Distortion ◽  
Variation Method ◽  
Objective Lens ◽  
Immediate Reconstruction ◽  
Exit Surface ◽  
Electron Microscopes

Further advances in resolution enhancement of transmission electron microscopes can be expected from digital processing of image data recorded with slow-scan CCD cameras. Image recording with these new cameras is essential because of their high sensitivity, extreme linearity and negligible geometric distortion. Furthermore, digital image acquisition allows for on-line processing which yields virtually immediate reconstruction results. At present, the most promising techniques for exit-surface wave reconstruction are electron holography and the recently proposed focal variation method. The latter method is based on image processing applied to a series of images recorded at equally spaced defocus.Exit-surface wave reconstruction using the focal variation method as proposed by Van Dyck and Op de Beeck proceeds in two stages. First, the complex image wave is retrieved by data extraction from a parabola situated in three-dimensional Fourier space. Then the objective lens spherical aberration, astigmatism and defocus are corrected by simply dividing the image wave by the wave aberration function calculated with the appropriate objective lens aberration coefficients which yields the exit-surface wave.

Surface Wave Utility in Composite Materia] Characterization

1989 ◽  
Vol 1 (1) ◽  
pp. 247-265
Author(s):  
Joseph Rose ◽  
Aleksander Pilarski ◽  
Yimei Huang
Keyword(s):  
Surface Wave
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