The diffraction of electromagnetic waves at a surface impedance discontinuity in a coaxial waveguide

1969 ◽  
Vol 9 (2) ◽  
pp. 4-6 ◽  
Author(s):  
M. S. Bobrovnikov
Keyword(s):  
Surface Impedance ◽  
Electromagnetic Waves ◽  
Coaxial Waveguide ◽  
Impedance Discontinuity

PONDEROMOTIVE EFFECT OF ELECTROMAGNETIC WAVES ON THIN VIBRATORS WITH WEAKLY PERTURBED SURFACE IMPEDANCE

2020 ◽  
Vol 79 (14) ◽  
pp. 1205-1215
Author(s):  
Yu. M. Penkin ◽  
V. A. Katrich ◽  
M. V. Nesterenko ◽  
S. L. Berdnik
Keyword(s):  
Surface Impedance ◽  
Electromagnetic Waves

Minimizing the reflection of electromagnetic waves by surface impedance

Wave Motion ◽  
1987 ◽  
Vol 9 (1) ◽  
pp. 19-36 ◽  
Author(s):  
T.J. Bridges ◽  
G. Chen ◽  
G. Crosta
Keyword(s):  
Surface Impedance ◽  
Electromagnetic Waves

scholarly journals ELECTROMAGNETIC WAVES RADIATION BY A VIBRATORS SYSTEM WITH VARIABLE SURFACE IMPEDANCE

2016 ◽  
Vol 51 ◽  
pp. 157-163 ◽  
Author(s):  
Sergey L. Berdnik ◽  
Viktor Katrich ◽  
Mikhail V. Nesterenko ◽  
Yuriy M. Penkin
Keyword(s):  
Surface Impedance ◽  
Electromagnetic Waves ◽  
Variable Surface

scholarly journals Using the Carotazh Method to Determine the Electrical Characteristics of the Earth’s Subsoil

2021 ◽  
Keyword(s):  
Magnetic Field ◽  
Electrical Conductivity ◽  
Electromagnetic Field ◽  
Surface Impedance ◽  
Electromagnetic Waves ◽  
Dielectric Permeability ◽  
Electrical Characteristics ◽  
Measuring Systems ◽  
The Earth ◽  
The Magnetic Field

Logging is a detailed study of the structure of the well incision by descent and ascent of a geophysical probe. It is often used to determine the electrical conductivity of terrestrial depths. To do this, the sides of the well deepen the electrodes, and they are fed into the depths of a constant electric current. However, if you use natural or artificial electromagnetic waves, it becomes possible to determine the dielectric permeability of terrestrial rocks at depth. To do this, the surface impedance is first measured on the surface of the earth, and then by measuring at a certain frequency of the electromagnetic field in the well hole, the electrical conductivity and dielectric permeability of terrestrial rocks are calculated by fairly simple formulas. Such measurements can be carried out by standard measuring systems, adding only a narrow frame with wire winding to measure the magnetic field.

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