Radiation resistance of an electric dipole in a magneto-ionic medium

2005 ◽  
Author(s):  
H. Weil ◽  
D. Walsh
Keyword(s):  
Electric Dipole ◽  
Radiation Resistance ◽  
Ionic Medium

On VLF Radiation Resistance of an Electric Dipole in a Cold Magnetoplasma

Radio Science ◽  
1970 ◽  
Vol 5 (3) ◽  
pp. 605-610 ◽  
Author(s):  
T. N. C. Wang ◽  
T. F. Bell
Keyword(s):  
Electric Dipole ◽  
Radiation Resistance

RADIATION FROM AN ELECTRIC DIPOLE IN AN AXIALLY MAGNETIZED PLASMA COLUMN—DIPOLAR MODES

1967 ◽  
Vol 45 (11) ◽  
pp. 3627-3648 ◽  
Author(s):  
G. L. Yip ◽  
S. R. Seshadri
Keyword(s):  
Electric Dipole ◽  
Radiation Resistance ◽  
Guided Waves ◽  
Plasma Frequency ◽  
Axial Magnetic Field ◽  
Radiation Power ◽  
Magnetized Plasma ◽  
Signal Frequency ◽  
Radiation Characteristics ◽  
Power Pattern

The radiation characteristics of an electric dipole are investigated for the case in which it is situated on, and oriented perpendicular to, the axis of an infinitely long and axially magnetized column of uniform, lossless, and cold plasma. In general, the electric dipole will excite space waves as well as guided waves, both of which are dipolar in nature. The radiation power pattern and the radiation resistance, resulting from the space waves, are investigated as a function of the column radius, the signal frequency, and the strength of magnetization. For thin and isotropic plasma columns, the radiation resistance has a maximum, which is due to the dipolar resonance. This resonance occurs at 1/√2 times the plasma frequency. The introduction of anisotropy by the application of an axial magnetic field results in the splitting of the single dipolar resonance into two, occurring at frequencies below and above 1/√2 times the plasma frequency. Finally, a comparison is made between the radiation characteristics in the present problem and those due to an axially oriented dipole.

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