Dipole Radiation in the Presence of a Conducting Half-space
Author : Alfredo Baños
Publisher : Pergamon
Page : 308 pages
File Size : 21,71 MB
Release : 1966
Category : Science
ISBN :
Electromagnetics Problem Solver
Author :
Publisher : Research & Education Assoc.
Page : 964 pages
File Size : 10,85 MB
Release : 1983
Category : Electromagnetism
ISBN : 9780738671031
Book Description
Quasi-Static Electromagnets Fields
Author : Peter R. Bannister
Publisher :
Page : 582 pages
File Size : 23,31 MB
Release : 1965
Category : Electromagnetic fields
ISBN :
Book Description
Analysis of Arbitrarily Oriented Thin Wire Antenna Arrays Over Imperfect Ground Planes
Author : Tapan K. Sarkar
Publisher :
Page : 110 pages
File Size : 29,25 MB
Release : 1975
Category : Antenna arrays
ISBN :
Book Description
The work considers the analysis of antenna and arrays of thin wires of arbitrary orientation above imperfectly conducting ground planes. Emphasis is placed on the development of fast and accurate techniques for computation of the characteristics of antenna systems. An important problem is the evaluation of certain semi-infinite integrals encountered in the exact Sommerfeld solution. The time required for computation of these integrals is reduced by the application of interpolatory quadrature formulas. Where applicable, a modified method of steepest descent is used to evaluate the integrals. The approximate reflection coefficient method is derived from the Sommerfeld formulation via the method of steepest descent. The accuracy of the reflection coefficient method relative to the Sommerfeld method is discussed. Finally, formulas convenient for the optimization of various performance indices are discussed. Typical indices that have been optimized, both with and without constraints, are directivity, power gain, quality factor, and main beam radiation efficiency.
Quasi-static Electromagnetic Fields
Author : Peter R. Bannister
Publisher :
Page : 580 pages
File Size : 39,93 MB
Release : 1980
Category : Electromagnetic fields
ISBN :
Book Description
Electromagnetic Scattering Concepts Applied to the Detection of Targets Near the Ground
Author : David Allen Hill
Publisher :
Page : 150 pages
File Size : 19,11 MB
Release : 1970
Category : Remote sensing
ISBN :
Book Description
Problems related to the detection of targets in the presence of clutter and ground are investigated. The two basic problems are the change in the target response due to the presence of the ground and the recognition of the target response when contaminated with clutter return. The transient fields of short dipoles in the presence of a dielectric half-space are examined and exact closed-form solutions are obtained for some particular source and observation points. The solution for the case of the source and observation points coincident is used to determine the interaction between a dipole source and the interface and the resultant dipole impedance change. The same solutions are used to compute the change in the dipole modes of scatterers due to the presence of a half-space, particularly the shift in the s-plane poles of the target. Results are presented for both dielectric and perfectly conducting half-spaces. (Author).
Waves in Layered Media
Author : L Brekhovskikh
Publisher : Elsevier
Page : 520 pages
File Size : 12,46 MB
Release : 2012-12-02
Category : Science
ISBN : 0323161626
Book Description
Waves in Layered Media discusses different theories about the relationship between waves and media. The book specifically covers several factors that can affect the behavior and formation of various kinds of waves in different types of media. Comprised of nine chapters, the book establishes the fundamentals by first tackling simplest concepts, such as the behavior plane wave and discretely layered media. The succeeding chapters cover much more complex ideas, such as the refraction and reflection of waves, spherical wave, and wave in inhomogeneous media. The book will be a great asset to researchers whose work involves acoustics, or to professionals whose line of work involves sound waves.
Journal of Research, National Bureau of Standards
Author : United States. National Bureau of Standards
Publisher :
Page : 1400 pages
File Size : 30,35 MB
Release : 1964
Category : Ionospheric radio wave propagation
ISBN :
Book Description
Analysis of Radiation by Wire Antennas Over Imperfect Ground
Author : Tapan K. Sarkar
Publisher :
Page : 80 pages
File Size : 31,85 MB
Release : 1975
Category : Antenna arrays
ISBN :
Book Description
Three user-oriented computer programs are presented and described for analyzing radiation from arrays of parallel vertical wires, parallel horizontal wires, and also arbitrary wire configurations over the surface of an imperfectly conducting earth. The first two programs are equipped to treat unequally spaced arrays of wires that can be of different lengths and radii and of arbitrary excitation and loading. The effects of the imperfectly conducting earth are accounted for in an essentailly exact manner by using the Sommerfeld formulation. The third program treats arbitrary wire antennas and incorporates the ground effects approximately by using the reflection-coefficient method. Computed output consists of current distribution, input impedances, and field patterns specified by the user.
Government-wide Index to Federal Research & Development Reports
Author :
Publisher :
Page : 1470 pages
File Size : 19,15 MB
Release : 1967-05
Category : Government publications
ISBN :
