LEADER 04594nam 2200589 a 450 001 9910144829403321 005 20170816120458.0 010 $a1-282-37228-9 010 $a9786612372285 010 $a3-527-60256-9 010 $a3-527-62208-X 035 $a(CKB)1000000000687747 035 $a(EBL)482097 035 $a(OCoLC)659508065 035 $a(SSID)ssj0000294889 035 $a(PQKBManifestationID)11911260 035 $a(PQKBTitleCode)TC0000294889 035 $a(PQKBWorkID)10312897 035 $a(PQKB)11367665 035 $a(MiAaPQ)EBC482097 035 $a(EXLCZ)991000000000687747 100 $a20040315d2003 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aElectromagnetic fields$b[electronic resource] $erestrictions and approximation /$fBoris Z. Katsenelenbaum 210 $aWeinheim $cWiley-VCH$dc2003 215 $a1 online resource (238 p.) 300 $aDescription based upon print version of record. 311 $a3-527-40388-4 320 $aIncludes bibliographical references and index. 327 $aElectromagnetic Fields - Restrictions and Approximation; Preface; Contents; 1 Introduction; 1.1 Introduction; 1.2 Subject and Method of Investigation; 1.3 Realizability, Approximability, Amplitude Approximability; 1.4 Outline of the Book; 2 Nonapproximability of Patterns; 2.1 Nonapproximability and Zero Lines of the Real Wave Field; 2.2 Examples of Specific Lines. "Prohibited" Antenna Shapes; 2.3 Amplitude Nonapproximability; 2.4 Probabilistic Description of Body Shape by the Likeness Principle; 2.5 Body Shape Reconstruction by its Scattered Patterns; 2.6 Properties of Specific Lines 327 $a3 Nonapproximability of Near Fields3.1 Approximability Condition for Near Fields; 3.2 Construction of a Field by its Zero Line. Case of the Circle Arc; 3.3 Analytical Extension of the Eigenoscillation Field outside the Boundary of the Domain; 4 The Norm of the Current; 4.1 The Minimal Current Norm at a Given Accuracy of Approximation; 4.2 Generalized Functions of Double Orthogonality. Nonapproximability and Existence of Nonradiating Currents; 4.3 Optimal Current Synthesis. The General Case; 4.4 Domain of Specific Line Influence; 5 Electromagnetic Field. The Maxwell Equations 327 $a5.1 Trivial Generalizations5.2 Properties of Specific Surfaces; 6 Long Narrow Beam of Electromagnetic Waves; 6.1 Two-dimensional Fourier Transformation; 6.2 Transmission of Field by Wave Beam: Possibilities and Restrictions; 6.3 Shape of Antenna and Rectenna; Bibliography for Chapters 1-6; Appendix Antenna Synthesis by Amplitude Radiation Pattern and Modified Phase Problem (by N. N. Voitovich); A.1 Synthesis of Antennas by Amplitude Radiation Pattern; A.1.1 Introduction; A.1.2 Problem formulation for the curvilinear antenna; A.1.3 Reducing to the Lagrange-Euler equation 327 $aA.1.4 Case of linear antenna. Main properties of solutionsA.2 Modified Phase Problem. Continuous Case; A.2.1 Modified phase problem and related mathematical and physical problems; A.2.2 Analytical solutions to the Lagrange-Euler equation for linear antenna. Theoretical results; A.2.3 Solution branching; A.2.4 Numerical example. Problem with symmetrical data; A.2.5 Problems with nonsymmetrical data; A.3 Modified Phase Problem. Discrete Case; A.3.1 Problem formulation for linear antenna array. Lagrange-Euler equations; A.3.2 Theoretical results; A.3.3 Numerical results 327 $aBibliography for AppendixIndex 330 $aThe fields scattered by metallic bodies or radiated by some types of antennas are created by the surfaces currents and therefore they are subject to some restrictions. The book is the first one where the properties of these fields are investigated in details. The properties have the important significance for the antenna synthesis, body shape reconstruction and other diffraction problems. The material of the book lies in the meetingpoint of the antenna theory, highfrequency electrodynamics and inverse scattering problems.The author is an internationally renowned investigator in the field o 606 $aElectromagnetic fields$xMeasurement 608 $aElectronic books. 615 0$aElectromagnetic fields$xMeasurement. 676 $a511.4 676 $a530.141 700 $aKat?senelenbaum$b B. Z$g(Boris Zakharovich)$0993007 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910144829403321 996 $aElectromagnetic fields$92273879 997 $aUNINA