Antennas
From the Theory of Long Lines to Integral Equations
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73 384 Ft
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Product details:
- Edition number 1
- Publisher CRC Press
- Date of Publication 26 December 2024
- ISBN 9781032582153
- Binding Hardback
- No. of pages536 pages
- Size 234x156 mm
- Weight 1147 g
- Language English
- Illustrations 338 Illustrations, black & white; 8 Illustrations, color; 1 Halftones, black & white; 337 Line drawings, black & white; 8 Line drawings, color 674
Categories
Short description:
This book on antenna analysis and synthesis relies heavily on the long line theory. The approach taken in it corresponds to the physical content of antenna problems, simplifies mathematical apparatus, and makes it possible to overcome difficulties.
MoreLong description:
This book describes both known and new results. In the sections devoted to the use of integral equations for the current in a linear metal radiator, the focus is on Leontovich's equation. An advantage of this equation is the simplicity of the solution and the absence of the argument ? in it because the integration over ? already performed. The refined solution makes it possible to determine the total sum of the series for the current, which is close to the known solution including only the first terms. The results of the synthesis of different types of antennas with capacitive loads are presented, which makes it possible to implement Hallen's hypothesis about the usefulness of applying such loads to create an in-phase current distribution in antennas and to obtain required characteristics.
New results include the widespread use of the complex potential method in relation to the calculation of capacitive structures in homogeneous and inhomogeneous media, antenna patterns and flows of electrical fields between antenna elements and in the surrounding space. In particular, the analysis of field flows makes it possible to substantiate a rigorous method for analyzing microstrip antennas. The characteristics of antennas in various conditions of their installation are considered and compared. The results of the use of multi-floors structures that provide in the wide frequency range the radiation in direction perpendicular to the antenna axis, and structures that make it possible to reduce the mutual influence of antennas located at different heights on a common mast are described.
MoreTable of Contents:
Preface. From straight radiators to long lines. Impedance and Complementary Antennas. Antenna analysis based on long lines? theory. Integral equations for radiators? currents. The problems of analysis. Application of method of complex potential. Synthesis problems. Some types of antennas and cables. Index.
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