Surface wave diffraction by a finite metal grating and numerical model for design of leaky-wave antennas

1991 ◽  
Vol 1 (10) ◽  
pp. 282-284 ◽  
Author(s):  
V.I. Kalinichev ◽  
Y.V. Kuranov
Keyword(s):  
Surface Wave ◽  
Numerical Model ◽  
Wave Diffraction ◽  
Leaky Wave ◽  
Metal Grating

Leaky and surface wave diffraction by an asymmetric impedance half plane

1983 ◽  
Vol 61 (6) ◽  
pp. 906-918
Author(s):  
W. Nasalski
Keyword(s):  
Exact Solution ◽  
Surface Wave ◽  
Half Plane ◽  
Wave Diffraction ◽  
Isotropic Medium ◽  
Diffraction Problem ◽  
Optical Field ◽  
Point Of View ◽  
Leaky Wave ◽  
Uniqueness Of The Solution

An exact solution is obtained for the problem of a leaky or surface wave incident on an impedance half plane in a homogeneous, isotropic medium. The impedance half plane is asymmetric, i.e., with different constant surface impedances at the upper and lower faces, respectively. The incident leaky wave propagates in a direction normal to the edge of the half plane.The diffraction problem leads to a set of two coupled Wiener–Hopf equations, from which two Hilbert problems on a new contour are obtained and solved. The Wiener–Hopf–Hilbert method is used. Expressions for the geometrical optical field are also derived and results arc discussed from the point of view of the uniqueness of the solution.

Multi-Mode Surface Wave Diffraction by a Wedge

1974 ◽  
Vol 26 (3) ◽  
pp. 531-538 ◽  
Author(s):  
Richard C. Morgan ◽  
Samuel N. Karp
Keyword(s):  
Surface Wave ◽  
Wave Diffraction ◽  
Multi Mode

scholarly journals Printed Leaky-Wave Antenna With Aperture Control Using Width-Modulated Microstrip Lines and TM Surface-Wave Feeding by SIW Technology

2019 ◽  
Vol 18 (9) ◽  
pp. 1809-1813 ◽  
Author(s):  
Maksim V. Kuznetcov ◽  
Victoria Gomez-Guillamon Buendia ◽  
Zain Shafiq ◽  
Ladislau Matekovits ◽  
Dimitris E. Anagnostou ◽  
...  
Keyword(s):  
Surface Wave ◽  
Leaky Wave ◽  
Microstrip Lines ◽  
Leaky Wave Antenna ◽  
Wave Antenna ◽  
Aperture Control

scholarly journals Perfect Conversion of a TM Surface Wave Into a TM Leaky Wave by an Isotropic Periodic Metasurface Printed on a Grounded Dielectric Slab

2020 ◽  
Vol 68 (8) ◽  
pp. 6145-6153
Author(s):  
Svetlana N. Tcvetkova ◽  
Enrica Martini ◽  
Sergei A. Tretyakov ◽  
Stefano Maci
Keyword(s):  
Surface Wave ◽  
Dielectric Slab ◽  
Leaky Wave

Wave diffraction in a two-fluid system

1969 ◽  
Vol 36 (1) ◽  
pp. 65-73 ◽  
Author(s):  
R. E. Kelly
Keyword(s):  
Approximate Solution ◽  
Surface Wave ◽  
Wave Diffraction ◽  
Bottom Topography ◽  
Density Ratio ◽  
Frequency Parameter ◽  
Step Change ◽  
Shallow Water Theory ◽  
Fluid System ◽  
Two Fluid

Wave diffraction due to a step change in bottom topography is considered for the case of two superimposed fluids of different, but constant, densities. The interface lies below the upper surface of the step. Shallow water theory is shown to be applicable only if the ratio of a non-dimensional frequency parameter to the departure of the density ratio from unity is sufficiently small. An approximate solution of the full equations, obtained by a method applied by Miles (1967) to surface wave diffraction, yields results limited only by the condition that the frequency parameter be small.

The Diffraction of Multidirectional Random Waves by Trapezoidal Submarine Pits

2003 ◽  
Author(s):  
Hong Sik Lee ◽  
A. Neil Williams ◽  
Sung Duk Kim
Keyword(s):  
Numerical Model ◽  
Wave Diffraction ◽  
Boundary Integral ◽  
Random Wave ◽  
Linear Wave ◽  
Wave System ◽  
Random Waves ◽  
Random Surface ◽  
Directional Spectrum ◽  
Integral Equation Approach

A numerical model is presented to predict the interaction of multidirectional random surface waves with one or more trapezoidal submarine pits. In the present formulation, each pit may have a different side slope, while the four side slopes at the interior edge of any given pit are assumed equal. The water depth in the fluid region exterior to the pits is taken to be uniform, and the solution method for a random wave system involves the superposition of linear-wave diffraction solutions based on a two-dimensional boundary integral equation approach. The incident wave conditions are specified using a discrete form of the Mitsuyasu directional spectrum. The results of the present numerical model have been compared with those of previous theoretical studies for regular and random wave diffraction by single or multiple rectangular pits. Reasonable agreement was obtained in all cases. Based on these comparisons it is concluded that the present numerical model is an accurate and efficient tool to predict the wave field around multiple submarine pits of trapezoidal section in many practical situations.

Sign in / Sign up

Export Citation Format

Share Document