Asymptotic Solutions of Dipoles in a Semi-infinite Medium PDF Download
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Author: Kondagunta U. Sivaprasad
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 62
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Book Description
A theoretical analysis is made of the electromagnetic fields in two homogeneous media separated by a plane interface with a point source located in the denser medium. The solution is expressed in the form of integrals which cannot be evaluated explicitly. Asymptotic evaluations of the integrals have been made by many investigators using the saddlepoint technique. In the present work, all known asymptotic results are presented in one comprehensive form, using a modification of the method suggested by Lighthill for the asymptotic evaluation of the Fourier integrals. The regions of validity of the solutions are indicated wherever possible. The advantage of this method over others is its ease and simplicity. The present results agree term by term with the earlier ones of Banos and Wesley (1953-1954), and Paul (1959), who investigated the case of a source and receiver close to the interface, and an arbitrary location of source and receiver, respectively. The results obtained in the report are also compared with those of Stein (1955). (Author).
Author: Kondagunta U. Sivaprasad
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 62
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Book Description
A theoretical analysis is made of the electromagnetic fields in two homogeneous media separated by a plane interface with a point source located in the denser medium. The solution is expressed in the form of integrals which cannot be evaluated explicitly. Asymptotic evaluations of the integrals have been made by many investigators using the saddlepoint technique. In the present work, all known asymptotic results are presented in one comprehensive form, using a modification of the method suggested by Lighthill for the asymptotic evaluation of the Fourier integrals. The regions of validity of the solutions are indicated wherever possible. The advantage of this method over others is its ease and simplicity. The present results agree term by term with the earlier ones of Banos and Wesley (1953-1954), and Paul (1959), who investigated the case of a source and receiver close to the interface, and an arbitrary location of source and receiver, respectively. The results obtained in the report are also compared with those of Stein (1955). (Author).
Author: Kondagunta U. Sivaprasad
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 0
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Book Description
A theoretical analysis is made of the electromagnetic fields in two homogeneous media separated by a plane interface with a point source located in the denser medium. The solution is expressed in the form of integrals which cannot be evaluated explicitly. Asymptotic evaluations of the integrals have been made by many investigators using the saddlepoint technique. In the present work, all known asymptotic results are presented in one comprehensive form, using a modification of the method suggested by Lighthill for the asymptotic evaluation of the Fourier integrals. The regions of validity of the solutions are indicated whereever possible. The advantage of this method over others is its ease and simplicity. The present results agree term by term with the earlier ones of Banos and Wesley (1953-1954), and Paul (1959), who investigated the case of a source and receiver close to the interface, and an arbitrary location of source and receiver, respectively. The results obtained in the report are also compared with those of Stein (1955). (Author)
Author: K. SIVAPRASAD
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
A dipole located in a semi-infinite dissipative medium is treated. In the investigation, a new technique was applied to the Somerfeld integrals based on a method suggested by Lighthill (Generlized Functions and Fourier Transform Theory, Cambridge University Press, 1960) for asymptotic solutions of Fourier integrals. The advantages of the method are its simplicityAND EASE. The results are valid for far fields in both air and the conducting medium. (Author).
Author:
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ISBN:
Category : Science
Languages : en
Pages : 760
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Author: Donald R. Fitzgerald
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ISBN:
Category : Atmospheric electricity
Languages : en
Pages : 28
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Author: Freeman D. Shepherd (Jr.)
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ISBN:
Category : Energy-band theory of solids
Languages : en
Pages : 98
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Details of the energy band structure of degenerate n-type germanium were determined by analysis of fine structure in the 4.2K volt-ampere characteristic of germanium tunnel diodes. No shift in the relative energy of the conduction band minima was observed. The band edge is found to be exponentially distributed with 1/e energies of the order of 10 MeV. There appears to be an ordering mechanism among the group V impurity atoms used as substrate dopants. (Author).
Author: Thomas G. Evans
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ISBN:
Category : Computer-aided design
Languages : en
Pages : 30
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The following paper represents work to date on the deformation method for quadratic programming and thus may be regarded as a sequel to Zahl, S. (1964) A Deformation Method for Quadratic Programming, Research Note AFCRL-63-132. It gives an explanation of a modified Iverson programming language and uses this to give a detailed algorithm for the Zahl Deformation Method of Quadratic Programming.
Author: Marvin S. Brooks
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ISBN:
Category : Antimony
Languages : en
Pages : 94
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An experimental study on the zone refining of the binary system triphenyl antimony-benzoic acid is described. The isotope Sb124, which is a strong gamma emitter, was employed as a tracer; this allowed a rapid in situ nondestructive analysis, closely spaced experimental points, and the opportunity to study distribution as a function of varying experimental conditions. With the aid of computers (IBM 7090 and IBM 7044) apparent k's were calculated and the experimental data compared with those predicted from various mathematical models. (Author).
Author: Richard D. Smallwood
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ISBN:
Category : Mathematical optimization
Languages : en
Pages : 28
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Author: Robert J. Papa
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ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 26
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