Cargando…
Ultra-wide band antennas /
Ultra Wide Band Technology (UWB) has reached a level of maturity that allows us to offer wireless links with either high or low data rates. These wireless links are frequently associated with a location capability for which ultimate accuracy varies with the inverse of the frequency bandwidth. Using...
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés Francés |
| Publicado: |
London : Hoboken, N.J. :
ISTE ; Wiley,
2011.
|
| Temas: | |
| Acceso en línea: | Texto completo (Requiere registro previo con correo institucional) |
Tabla de Contenidos:
- Cover; Ultra Wide Band Antennas; Title Page; Copyright Page; Table of Contents; Preface; Chapter 1. Applications of Ultra Wide Band Systems; 1.1. Introduction; 1.2. UWB regulation: a complex context; 1.2.1. UWB regulation in the USA; 1.2.2. UWB regulation in Europe; 1.2.3. UWB regulation in Japan; 1.2.4. Emission mask in the United States, Europe and Japan; 1.3. Formal Ultra Wide Band types; 1.3.1. Ultra Wide Band Impulse Radio (UWB-IR); 1.3.2. OFDM-ultra wide band (UWB-OFDM); 1.4. Non-formal ultra wide band types; 1.4.1. Ultra wide band frequency hopping (UWB-FH)
- 1.4.2. Chirp Ultra Wide Band (UWB-FM)1.5. Comparison between the different Ultra Wide Band techniques; 1.6. Typical UWB-OFDM applications; 1.6.1. Peripheral connection to a PC; 1.6.2. High speed applications in large structures with optical fiber backbone; 1.6.3. High speed UWB in a harsh indoor environment; 1.6.4. High speed UWB combined with other technologies; 1.7. Specialized UWB-OFDM applications; 1.7.1. Last mile radio applications; 1.7.2. Information and video streaming applications; 1.8. Typical applications of the Impulse Radio UWB, UWB-FH and UWB-FM
- 1.8.1. Professional geo-localization1.8.2. Geolocalization for private individuals; 1.9. Impact on the antennas; Chapter 2. Radiation Characteristics of Antennas; 2.1. Introduction; 2.1.1. What is an antenna and how can we define it?; 2.1.2. Where does antenna radiation come from?; 2.2. How can we characterize an antenna?; 2.2.1. Plane wave and polarization; 2.3. Radiation fields and radiation power; 2.3.1. Radiation fields; 2.3.2. Radiation power; 2.3.3. The radiation pattern, the phase center; 2.3.4. Directive gain, directivity; 2.3.5. Radiation impedance and radiation resistance
- 2.4. Gain, efficiency and effective aperture2.4.1. Gain and efficiency; 2.4.2. Receive antenna effective aperture; 2.5. Budget link, transfer function; 2.6. Equivalent circuits of the antennas; 2.7. Bandwidth; 2.8. Example of characterization: the triangular probe antenna in F; 2.8.1. Description of the structure; 2.8.2. Impedance matching; 2.8.3. Radiation patterns; 2.8.4. Optimization of the antenna; Chapter 3. Representation, Characterization and Modeling of Ultra Wide Band Antennas; 3.1. Introduction; 3.2. Specificities of UWB antennas: stakes and representation
- 3.2.1. Context and requirements of an effective and complete representation3.2.2. Transfer function in transmission; 3.2.3. Transfer function in reception, reciprocity; 3.2.4. Transfer function and "conventional" quantities; 3.2.5. Elements on the measurement of transfer functions in the frequency domain; 3.3. Temporal behavior, distortion; 3.4. Distortion and ideality; 3.5. Performance characterization: synthetic indicators; 3.5.1. Energy gain and mean realized gain (MRG); 3.5.2. Synthetic indicators of distortion