Analysis of nested design of plasma antenna based on the azimuthally symmetric surface waves: UHF and SHF bands

2017 ◽  
Vol 24 (10) ◽  
pp. 103304 ◽  
Author(s):  
N. Nasr ◽  
H. Mehdian ◽  
K. Hajisharifi ◽  
A. Hasanbeigi
Keyword(s):  
Surface Waves ◽  
Plasma Antenna ◽  
Nested Design ◽  
Symmetric Surface

scholarly journals SYMMETRIC SURFACE WAVES OVER A BUMP

2003 ◽  
Vol 40 (6) ◽  
pp. 1051-1060 ◽  
Author(s):  
J.W. Choi ◽  
Daniel An ◽  
Chae-Ho Lim ◽  
Sang-Ro Park
Keyword(s):  
Surface Waves ◽  
Symmetric Surface

AZIMUTHALLY NON-SYMMETRIC SURFACE WAVES PROPAGATING IN METAL WAVEGUIDES FILLED WITH ISOTROPIC PLASMA

2014 ◽  
Vol 61 ◽  
pp. 87-98 ◽  
Author(s):  
Volodymyr Oleksandrovych Girka ◽  
Igor O. Girka ◽  
Richard D. Sydora
Keyword(s):  
Surface Waves ◽  
Isotropic Plasma ◽  
Symmetric Surface

The behaviour of elastic surface waves polarized in a plane of material symmetry. I. Addendum

1991 ◽  
Vol 433 (1889) ◽  
pp. 699-710 ◽  
Keyword(s):  
Surface Wave ◽  
Surface Waves ◽  
Plane Waves ◽  
Transversely Isotropic ◽  
Point Of View ◽  
Reference Plane ◽  
Material Symmetry ◽  
Reflected Waves ◽  
Inhomogeneous Plane ◽  
Symmetric Surface

This addition to a recent paper by Chadwick ( Proc. R. Soc. Lond . A 430, 213 (1990); hereafter referred to as part I) has been prompted mainly by the discovery of secluded supersonic surface waves propagating in configurations of transversely isotropic elastic media in which the reference plane is not a plane of material symmetry and coexisting with a subsonic surface wave. The occurrence of a supersonic surface wave travelling in a direction e 1 with speed v s implies that there are two homogeneous plane waves, with slowness vectors s i and s r such that s i . e 1 = S r . e 1 = v -1 s , which comprise the incident and reflected waves in a case of simple reflection at the traction-free boundary. Supersonic surface waves may therefore be found by searching within a suitably defined space of simple reflection, R . This is the approach which has led to the new results mentioned above and the principal conclusions of part I are re-examined here from the same point of view. It is found that, whereas the secluded supersonic surface waves in transversely isotropic media correspond to isolated points on a curvilinear projection of R which does not intersect the curve representing subsonic surface waves, the symmetric surface waves studied in part I define a curve which may lie partly inside and partly outside a projection of R in the form of a region, the interior points representing supersonic and the exterior points subsonic surface waves. This discussion is preceded by a simplification of the existence-uniqueness theorem proved in part I and followed by a reconsideration of the possibility that an inhomogeneous plane elastic wave can qualify as a surface wave. Such one-component surface waves do exist, but a symmetric surface wave necessarily contains two inhomogeneous plane waves.

Nonlinear dispersion of surface waves in a plasma column

1984 ◽  
Vol 31 (2) ◽  
pp. 177-191 ◽  
Author(s):  
D. Grozev ◽  
A. Shivarova
Keyword(s):  
Phase Velocity ◽  
Surface Waves ◽  
Plasma Column ◽  
Fundamental Wave ◽  
Third Order ◽  
Ion Plasma ◽  
Wave Phase Velocity ◽  
Collisional Damping ◽  
Damping Rate ◽  
Symmetric Surface

The effect of the nonlinear changes of the dispersion characteristics of highfrequency azimuthally symmetric surface waves in a plasma column is investigated theoretically. Both (ω + ω) – ω and (ω – ω) + ω nonlinear interactions of the third order (in relation to the fundamental wave amplitude) are considered here. These two types of interactions influence the wave phase velocity and the collisional damping rate in opposite ways. When ω2Pi/v2 < 1, the contribution of the (ω – ω) – ω interaction is negligible and the (ω + ω) – ω interaction results in an increase of the phase velocity and a decrease of the time damping rate. When ω2pi/v2 > 1, both interactions are involved; the (ω – ω) + ω interaction associated with the ponderomotive force becomes more important, decreasing the phase velocity and increasing the time damping rate (ωpi and v are ion plasma and electron-neutral collision frequencies, respectively).

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