Multifunctional ultrawideband antennas : trends, techniques and applications / by Chinmoy Saha, Jawad Y. Siddiqui, and Yahia M.M. Antar.
Multifunctional Antennas (MFA) are comparatively a new area for antenna research and finds applications in various modern wireless radios, like Cognitive Radio (CR) in Software Defined Radio (SDR) technology and MIMO technology. This book is first attempt and an invaluable resource which deals with...
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| Format: | eBook |
| Language: | English |
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Boca Raton :
CRC Press,
2019.
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Table of Contents:
- Cover; Half Title; Title Page; Copyright Page; Contents; About the Authors; Preface; 1: Introduction to UWB Systems and Applications; 1.1 Introduction; 1.2 An Overview of the UWB Systems; Formal Definition of UWB Systems; 1.2.1 History of UWB; 1.2.2 UWB Signals and Systems; 1.2.2.1 UWB Impulse Radio (UWB-IR); 1.2.2.2 Direct Sequence Spread Spectrum (DS-SS); 1.2.2.3 Orthogonal Frequency Division Multiplexing (OFDM); 1.2.2.4 Frequency Hopping; 1.2.3 Spectrum Regulation for UWB; 1.3 Applications of UWB Technology; 1.3.1 Ranging and Localization; 1.3.2 High-Speed Data Link.
- 1.3.3 Wireless Sensor Network1.3.4 Body Area Network (BAN); 1.3.5 UWB Radar; 1.3.6 Bio-Medical Imaging; References; 2: Design and Developments of UWB Antennas; 2.1 Introduction; 2.2 Review of Fundamental Antenna Parameters; 2.2.1 Radiation Power Density; 2.2.2 Radiation Intensity; 2.2.3 Directivity; 2.2.4 Efficiency and Gain of an Antenna; 2.2.4.1 Radiation Efficiency; 2.2.4.2 Reflection Mismatch Efficiency; 2.2.4.3 Overall Efficiency; 2.2.4.4 Gain; 2.2.4.5 Realized Gain or Absolute Gain; 2.2.5 Beam Efficiency; 2.2.6 Effective Aperture; 2.2.7 Front-to-Back Ratio.
- 2.2.8 Input Impedance and Matching2.2.8.1 Reflection Coefficient; 2.2.8.2 Voltage Standing Wave Ratio (VSWR); 2.2.8.3 S11 in dB; 2.2.9 Polarization; 2.2.9.1 Linear Polarization; 2.2.9.2 Circular Polarization; 2.2.9.3 Axial Ratio; 2.2.9.4 Co- and Cross-Polarized Radiation; 2.2.9.5 Polarization Loss Factor; 2.3 Characterization of UWB Antennas; 2.3.1 High Bandwidth; 2.3.1.1 Absolute Bandwidth; 2.3.1.2 Ratio Bandwidth; 2.3.1.3 Fractional Bandwidth of Antenna; 2.3.1.4 Percentage Bandwidth; 2.3.2 Dispersion and Distortion of UWB Pulse; 2.3.2.1 Peak Value; 2.3.2.2 Envelope Width; 2.3.2.3 Ringing.
- 2.3.2.4 Phase Response and Group Delay2.3.2.5 Fidelity; 2.3.3 Experimental Setup for Time-Domain Characterization; 2.4 Wideband and UWB Antenna: A Brief Review; 2.4.1 Frequency-Independent Antennas; 2.4.1.1 Equiangular Antenna; 2.4.1.2 Log-Periodic Antenna; 2.4.1.3 Biconical Antenna; 2.4.1.4 Discone Antenna; 2.4.1.5 Bow Tie Antenna; 2.4.2 UWB Printed Monopole Antenna; 2.4.2.1 Vertical Disc Monopole; 2.4.2.2 Printed Slotted Monopole; 2.4.3 UWB Tapered Slot Antenna; 2.4.3.1 Feeding Mechanism of Tapered Slot Antennas; 2.4.4 UWB Fractal Antenna; 2.4.5 UWB Dielectric Resonator Antennas.
- 2.4.5.1 Modes and Radiation Mechanisms of DRAs2.4.5.2 Broadband DRA Techniques; 2.4.6 UWB Antennas for Special Applications; References; 3: Frequency-Notched UWB Antenna Design; 3.1 Introduction; 3.2 Spectrum Overlapping Between UWB and Narrowband Services; 3.2.1 RF Spectrum; 3.2.2 Interference Aspects; 3.3 Techniques of Frequency-Notched UWB Antennas; 3.3.1 Modifications on the Radiator; 3.3.2 Modifications on the Ground Plane or Signal Line; 3.3.3 Integrated Filter Techniques; 3.3.4 Metamaterial-Inspired Resonators; 3.3.4.1 Calculation of SRR's Resonance Frequency; 3.3.4.2 Circular SRR.