Fast Calculation of the Electromagnetic Field by a Vertical Electric Dipole Over a Lossy Ground and Its Application in Evaluating the Lightning Radiation Field in the Frequency Domain

Zou, Jun; Jiang, Tingyong; Lee, Jae Bok; Chang, Sughun

doi:10.1109/temc.2009.2037612

Cited by 21 publications

(14 citation statements)

References 15 publications

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“…When the dipole is vertically lying above the lossy dielectric half-space, there appear multiple numbers of complex images in its equivalent representation in [9]. As a consequence, the Green's function G LG (z, z ) needs to consider the contribution of M number of complex images in (1). Therefore, the Green's function G LG (z, z ) will be…”

Section: Characteristic Mode Formulationmentioning

confidence: 99%

Vertical Dipole Above the Lossy Dielectric Half-Space—A Characteristic Mode Analysis

Ghosal

Shubair

et al. 2020

IEEE Trans. Electromagn. Compat.

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This work introduces a theoretical extension of the characteristic mode formulation for analysing the vertical electric dipole lying above a lossy dielectric half-space. As the conventional characteristic formulation fails to maintain the orthogonality of the characteristic field modes over the infinite sphere, an alternate modal formulation is proposed here to maintain the orthogonality for both the current and field modes. The modal results are found to match closely with its method of moment counterparts. Later, the modes of an isolated dipole with no ground plane have been used to predict the role of the lossy ground plane through a theory of the linear combination of the eigenvectors. The proposed formulations have been studied with different heights from the ground plane and are compared with the direct modal solutions to validate its accuracy. It helps to provide a thorough understanding of how the isolated modes interact among each other to constitute the perturbed modes in the presence of the lossy half-space. It can find application to include the lossy earth effect in the study of the lightning fields and the path loss modelling of the antennas over the lossy ground.

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Section: Characteristic Mode Formulationmentioning

confidence: 99%

Vertical Dipole Above the Lossy Dielectric Half-Space—A Characteristic Mode Analysis

Ghosal

Shubair

et al. 2020

IEEE Trans. Electromagn. Compat.

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“…CONCLUSIONS The above analysis is based on the double exponential model of lightning. We know that electromagnetic field is continuously excited by the lightning current [8] [9]. The "mirror method" was used in this article only when the boundary conditions are relatively simple.…”

Section: Jidi(t)(x -I Cosbcosa)mentioning

confidence: 99%

Distribution of electromagnetic field for spatial diagonal lightning current

Zhou

Wang

et al. 2011

2011 7th Asia-Pacific International Conference on Lightning

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The analysis for lightning current facing in communication system has been analyzed and discussed in literatures. But the most of them are the situations of perpendicular to the ground for the lightning current, which is not universal. In this thesis, lightning current is simplified into a model of spatial diagonal current source, and 'image method' is adopted in the analysis of electromagnetic field distribution. The results show that lightning would create strong electromagnetic radiation when lightning occurs. This method provides a theoretical basis for further analysis of lightning protections.

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“…In 2010 Khalatpour et al [11] presented a method for evaluation of impedance and current distribution of a vertical wire antenna above lossy ground; this work was completed by using the matrix pencil method. In 2010 Zou et al [12] presented a fast algorithm for calculating the field excited by a vertical dipole over a lossy ground; the integrals in this work were decomposed into two parts, one could be calculated by a recursive analytical expression and the other can be calculated numerically. In 2011 M. P. Rančić and P. D. Rančić [13] proposed a new model to solve the current distribution and input impedance of a horizontal dipole antenna above a homogenous lossy half space; the method proved to be accurate and effective.…”

Section: Introductionmentioning

confidence: 99%

Analysis of an Underground Vertical Electrically Small Wire Antenna

Dong

Yao

Meng

2015

Journal of Electrical and Computer Engineering

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The problem considered is a vertical electrically small wire antenna located underground, which transmits electromagnetic signals to the ground. Getting Green's function of the vertical dipole underground was the first step to calculate this issue. A quasistatic situation was considered to make an approximation on Sommerfeld integral for easy solution. The method of moments was used to solve the current distribution on the antenna surface at different frequencies, which laid a good foundation for obtaining the electric field of the antenna. Then the axial and radial components of the electric field with the radial distance on the ground were investigated, as well as the voltage received on the ground. Furthermore, the influence of the frequency and stratum parameters on current and electric field was studied to understand the variation clearly.

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Fast Calculation of the Electromagnetic Field by a Vertical Electric Dipole Over a Lossy Ground and Its Application in Evaluating the Lightning Radiation Field in the Frequency Domain

Cited by 21 publications

References 15 publications

Vertical Dipole Above the Lossy Dielectric Half-Space—A Characteristic Mode Analysis

Vertical Dipole Above the Lossy Dielectric Half-Space—A Characteristic Mode Analysis

Distribution of electromagnetic field for spatial diagonal lightning current

Analysis of an Underground Vertical Electrically Small Wire Antenna

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