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Foundations of Antenna Engineering: A Unified Approach for Line-of-Sight and Multipath.
This is the first textbook that contains a holistic treatment of antennas both for traditional antennas mounted on masts (Line-of-Sight antenna systems) and for small antennas used on modern wireless devices such as smart phones being subject to signal variations (fading) due to multipath propagatio...
| Clasificación: | Libro Electrónico |
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| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Boston, MA
Artech House
2015.
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| Edición: | First edition. |
| Colección: | Artech House antennas and electromagnetics analysis library.
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| Temas: | |
| Acceso en línea: | Texto completo |
Tabla de Contenidos:
- Foundations of Antenna Engineering: A Unified Approach for Line-of-Sight and Multipath; Contents; Preface; Acknowledgments; Chapter 1 Introduction; 1.1 Antenna Types and Classes; 1.2 Brief History of Antennas and Analysis Methods; 1.3 Terminology, Quantities, Units, and Symbols; 1.3.1 Radiation or Scattering; 1.3.2 Reflection, Refraction, and Diffraction; 1.3.3 Rays, Waves, Phase Fronts, and Phase Paths; 1.3.4 SI Units for Fields and Sources and Decibels; 1.3.5 Symbols; 1.4 Vector Notation and Coordinate Transformations; 1.4.1 Some Vector Formulas; 1.4.2 Coordinate Transformations.
- 1.4.3 Dyads1.5 Overview on EM Analysis Methods by S. Maci; References; Chapter 2 Characterization of Directive Antennas; 2.1 Time-Harmonic Electromagnetic Fields; 2.2 Plane Waves and Their Polarization; 2.2.1 Linear Polarization; 2.2.2 Circular Polarization; 2.2.3 Axial Ratio and Cross-Polarization; 2.2.4 Example: Amplitude and Phase Errors in Circular Polarization Excitations; 2.2.5 Polarizer for Generating Circular Polarization; 2.2.6 Example: Mismatch in Polarizer; 2.3 Radiation Fields; 2.3.1 Field Regions; 2.3.2 Radiation Fields of Receiving Antennas.
- 2.3.3 Far-Field Function and Radiation Intensity2.3.4 Phase Reference Point and Fraunhofer Approximation; 2.3.5 Polarization of Radiation Fields; 2.3.6 Copolar and Cross-Polar Radiation Patterns; 2.3.7 Phase Center; 2.3.8 Total Radiated Power; 2.3.9 Directive Gain and Directivity; 2.3.10 Beamwidth; 2.3.11 Cross-Polarization; 2.3.12 Beam Efficiency; 2.3.13 E- and H-Plane Patterns; 2.3.14 Fourier Expansion of the Radiation Field; 2.3.15 Example: Phase Reference Point for Asymmetric Phase Pattern; 2.3.16 Example: Calculation of Phase Center of a Symmetric Beam.
- 2.4 Rotationally Symmetric Antennas (BOR)2.4.1 BOR0 Antennas with Rotationally Symmetric Radiation Fields; 2.4.2 BOR1 Antennas; 2.4.3 Example: Directivity of BOR1 Antenna with Low Sidelobes; 2.4.4 Example: Directivity of BOR1 Antenna with High Far-Out Sidelobes; 2.4.5 Example: BOR1 Antenna with Different E- and H-Plane Patterns; 2.4.6 Example: BOR1 Antenna with Different E- and H-Plane Phase Patterns; 2.5 System Characteristics of the Antenna; 2.5.1 Antenna Gain; 2.5.2 Aperture Efficiency and Effective Area; 2.5.3 Friis Transmission Equation and the Radar Equation.
- 2.5.4 Antenna Noise Temperature and G/T2.5.5 Bandwidth; 2.5.6 Tolerances; 2.5.7 Environmental Effects; 2.5.8 Example: Noise Temperature and G/T; 2.6 Equivalent Circuits of Single-Port Antennas; 2.6.1 Transmitting Antennas; 2.6.2 Impedance Matching to Transmission Line; 2.6.3 Receiving Antenna; 2.6.4 Conjugate Impedance Matching; 2.6.5 Impedance and Reflection Coefficient Transformations; 2.7 Periodic Reflection Coefficients; 2.8 Equivalent Circuits of Multiport Array Antennas; 2.9 Further Reading; 2.10 Complementary Comments by S. Maci; 2.11 Exercises; References.