Singularity in the radiation resistance of a point electric dipole in a magnetoionic medium

1966 ◽  
Vol 2 (7) ◽  
pp. 263 ◽  
Author(s):  
S.R. Seshadri
Keyword(s):  
Electric Dipole ◽  
Radiation Resistance ◽  
Point Electric Dipole

The Excitation of Resonances by a Dipole Antenna Inside a Hollow Cylindrical Plasma

1972 ◽  
Vol 50 (21) ◽  
pp. 2628-2637 ◽  
Author(s):  
G. L. Yip
Keyword(s):  
Electric Dipole ◽  
Radiation Resistance ◽  
Collision Frequency ◽  
Plasma Frequency ◽  
Dipole Antenna ◽  
Signal Frequency ◽  
Cylindrical Plasma ◽  
Point Electric Dipole ◽  
Practical Implications ◽  
Plasma Tube

The problem of the excitation of resonances by a dipole antenna inside a hollow cylindrical plasma is examined. The plasma is assumed to be cold, uniform, isotropic, and lossy. A transversely oriented point electric dipole antenna lying on the axis of the cylindrical plasma is the source under consideration. For a thin and lossless plasma, resonances are found to occur at the two frequencies corresponding to dipolar resonances in a hollow cylindrical plasma as derived earlier by, for example, Kaiser and Closs, and Vandenplas. In addition, there is also an antiresonance at the plasma frequency. The radiation resistance and radiation patterns of the plasma-covered dipole are presented to show the effects of the radii of the plasma tube, the signal frequency and the collision frequency. The possible practical implications of the present study as pertaining to the improvements of reentry communication and the excitation of plasma resonances in ionospheric irregularities are discussed.

scholarly journals Electrostatic and magnetostatic fields of point dipoles revisited

2019 ◽  
Vol 65 (1) ◽  
pp. 71 ◽  
Author(s):  
Y. Muniz ◽  
Anderson José Fonseca ◽  
C. Farina
Keyword(s):  
Magnetic Dipole ◽  
Electric Dipole ◽  
Alternative Procedure ◽  
Dirac Delta ◽  
Delta Functions ◽  
Point Electric Dipole

After reviewing how the Dirac delta contributions to the electrostatic and magnetostatic fields of a point electric dipole and a point magnetic dipole are usually introduced, we present an alternative procedure for obtaining these terms based on a regularization prescription similar to that used in the computation of the transverse and longitudinal delta functions. We think this method may be useful for the students in other analogous calculations.

scholarly journals Excitation of a homogeneous dielectric sphere by a point electric dipole

2021 ◽  
Vol 2015 (1) ◽  
pp. 012043
Author(s):  
Roman Gaponenko ◽  
Ilia Rasskazov ◽  
Alexander Moroz ◽  
Dmitry Pidgayko ◽  
Konstantin Ladutenko ◽  
...  
Keyword(s):  
Refractive Index ◽  
Electric Dipole ◽  
Electronic Devices ◽  
High Refractive Index ◽  
Dielectric Sphere ◽  
Physical Size ◽  
Spherical Antenna ◽  
Dielectric Antennas ◽  
Point Electric Dipole ◽  
Modern Technologies

Abstract Electrically small dielectric antennas are of great interest for modern technologies, since they can significantly reduce the physical size of electronic devices for processing and transmitting information. We investigate the influence of the resonance conditions of an electrically small dielectric spherical antenna with a high refractive index on its directivity and analyze the dependence of these resonances on the effectively excited modes of the dielectric sphere.

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

A new constant of motion for an electric charge acted on by a point electric dipole

2008 ◽  
Vol 76 (12) ◽  
pp. 1141-1145 ◽  
Author(s):  
Sergio Gutiérrez-López ◽  
Arnulfo Castellanos-Moreno ◽  
Rodrigo Arturo Rosas-Burgos
Keyword(s):  
Electric Charge ◽  
Electric Dipole ◽  
Constant Of Motion ◽  
Point Electric Dipole
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