LEADER 04731nam 22005894a 450 001 9910143417303321 005 20170814180204.0 010 $a1-280-46841-6 010 $a9786610468416 010 $a0-470-04104-8 010 $a0-470-04103-X 035 $a(CKB)1000000000354639 035 $a(EBL)261338 035 $a(OCoLC)77345959 035 $a(SSID)ssj0000144970 035 $a(PQKBManifestationID)11142416 035 $a(PQKBTitleCode)TC0000144970 035 $a(PQKBWorkID)10147859 035 $a(PQKB)10559913 035 $a(MiAaPQ)EBC261338 035 $a(EXLCZ)991000000000354639 100 $a20051223d2006 uy 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aElectrically small, superdirective, and superconducting antennas$b[electronic resource] /$fR.C. Hansen 210 $aHoboken, N.J. $cWiley-Interscience$dc2006 215 $a1 online resource (182 p.) 300 $aDescription based upon print version of record. 311 $a0-471-78255-6 320 $aIncludes bibliographical references and indexes. 327 $aElectrically Small, Superdirective, and Superconducting Antennas; Contents; Preface; 1. Electrically Small Antennas; 1.1 Introduction; 1.2 Fundamental Limitations; 1.2.1 Wheeler-Chu-McLean; 1.2.2 Foster's Reactance Theorem Versus Smith Chart; 1.2.3 Fano's Matching Limitations; 1.3 Electrically Small Antennas: Canonical Types; 1.3.1 Dipole Basic Characteristics; 1.3.1.1 Resistive and Reactive Loading; 1.3.1.2 Other Loading Configurations; 1.3.2 Patch and Partial Sleeve; 1.3.2.1 Titanate or Metaferrite Substrate; 1.3.2.2 Partial Sleeve; 1.3.3 Loop Basic Characteristics; 1.3.3.1 Air Core Loop 327 $a1.3.3.2 Multiturn Air Loop1.3.3.3 Magnetic Core Loop; 1.3.3.4 Receiving Loops; 1.3.3.5 Vector Sensor; 1.3.4 Dielectric Resonator Antenna; 1.4 Clever Physics, but Bad Numbers; 1.4.1 Contrawound Toroidal Helix Antenna; 1.4.2 Transmission Line Antennas; 1.4.3 Halo, Hula Hoop, and DDRR Antennas; 1.4.4 Dielectric Loaded Antennas; 1.4.5 Meanderline Antennas; 1.4.6 Cage Monopole; 1.5 Pathological Antennas; 1.5.1 Crossed-Field Antenna; 1.5.2 Snyder Dipole; 1.5.3 Loop-Coupled Loop; 1.5.4 Multiarm Dipole; 1.5.5 Complementary Pair Antenna; 1.5.6 Integrated Antenna; 1.5.7 Antenna in a NIM Shell 327 $a1.5.8 Fractal Antennas1.5.9 Antenna on a Chip; 1.5.10 Random Segment Antennas; 1.5.11 Multiple Multipoles; 1.5.12 Switched Loop Antennas; 1.6 ESA Summary; References; Author Index; 2. Superdirective Antennas; 2.1 History and Motivation; 2.2 Maximum Directivity; 2.2.1 Apertures; 2.2.2 Arrays; 2.2.2.1 Broadside Arrays of Fixed Spacing; 2.2.2.2 Endfire Arrays; 2.3 Constrained Superdirectivity; 2.3.1 Dolph-Chebyshev Superdirectivity; 2.3.2 Superdirective Ratio Constraint; 2.3.3 Bandwidth or Q Constraint; 2.3.4 Phase or Position Adjustment; 2.3.5 Tolerance Constraint 327 $a2.4 Bandwidth, Efficiency, and Tolerances2.4.1 Bandwidth; 2.4.2 Efficiency; 2.4.3 Tolerances; 2.5 Miscellaneous Superdirectivity; 2.6 Matching Circuit Loss Magnification; 2.7 Non-Foster Matching Circuits; 2.8 SD Antenna Summary; References; Author Index; 3. Superconducting Antennas; 3.1 Introduction; 3.2 Superconductivity Concepts for Antenna Engineers; 3.3 Dipole, Loop, and Patch Antennas; 3.3.1 Loop and Dipole Antennas; 3.3.2 Microstrip Antennas; 3.3.3 Array Antennas; 3.3.4 Millimeter Wave Antennas; 3.3.4.1 Waveguide Flat Plane Array; 3.3.4.2 Microstrip Planar Array 327 $a3.3.5 Submillimeter Antennas3.3.6 Low-Temperature Superconductor Antennas; 3.4 Phasers and Delay Lines; 3.5 SC Antenna Summary; References; Author Index; Subject Index 330 $aA seminal reference to electrically small antennas for today's wireless and Wi-Fi worldThis book is dedicated to the challenges posed by electrically small antennas and their solutions. Electrically small antennas have characteristics that limit performance: low radiation resistance, high reactance, low efficiency, narrow bandwidth, and increased loss in the matching network. Most of these limitations are shared by two other classes of antennas: superdirective and superconducting antennas. All three classes of antennas are thoroughly treated in three interrelated parts:* Part O 606 $aAntennas (Electronics) 608 $aElectronic books. 615 0$aAntennas (Electronics) 676 $a621.3824 676 $a621.384135 700 $aHansen$b Robert C$027095 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910143417303321 996 $aElectrically small, superdirective, and superconducting antennas$91226108 997 $aUNINA