| |
| |
Preface | |
| |
| |
Acknowledgments | |
| |
| |
| |
What Is an Antenna and How Does It Work? | |
| |
| |
| |
Summary | |
| |
| |
| |
Historical Overview of Maxwell's Equations | |
| |
| |
| |
Review of Maxwell-Heaviside-Hertz Equations | |
| |
| |
| |
Faraday's Law | |
| |
| |
| |
Generalized Ampere's Law | |
| |
| |
| |
Generalized Gauss's Law of Electrostatics | |
| |
| |
| |
Generalized Gauss's Law of Magnetostatics | |
| |
| |
| |
Equation of Continuity | |
| |
| |
| |
Solution of Maxwell's Equations | |
| |
| |
| |
Radiation and Reception Properties of a Point Source Antenna in Frequency and in Time Domain | |
| |
| |
| |
Radiation of Fields from Point Sources | |
| |
| |
| |
Reception Properties of a Point Receiver | |
| |
| |
| |
Radiation and Reception Properties of Finite-Sized Dipole-Like Structures in Frequency and in Time | |
| |
| |
| |
Radiation Fields from Wire-like Structures in th Frequency Domain | |
| |
| |
| |
Radiation Fields from Wire-like Structures in the Time Domain | |
| |
| |
| |
Induced Voltage on a Finite-Sized Receive Wire-like Structure Due to a Transient Incident Field | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Fundamentals of Antenna Theory in the Frequency Domain | |
| |
| |
| |
Summary | |
| |
| |
| |
Field Produced by a Hertzian Dipole | |
| |
| |
| |
Concept of Near and Far Fields | |
| |
| |
| |
Field Radiated by a Small Circular Loop | |
| |
| |
| |
Field Produced by a Finite-Sized Dipole | |
| |
| |
| |
Radiation Field from a Linear Antenna | |
| |
| |
| |
Near- and Far-Field Properties of Antennas | |
| |
| |
| |
What Is Beamforming Using Antennas | |
| |
| |
| |
Use of Spatial Antenna Diversity | |
| |
| |
| |
The Mathematics and Physics of an Antenna Array | |
| |
| |
| |
Propagation Modeling in the Frequency Domain | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Fundamentals of an Antenna in the Time Domain | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
UWB Input Pulse | |
| |
| |
| |
Travelling-Wave Antenna | |
| |
| |
| |
Reciprocity Relation Between Antennas | |
| |
| |
| |
Antenna Simulations | |
| |
| |
| |
Loaded Antennas | |
| |
| |
| |
Dipole | |
| |
| |
| |
Bicones | |
| |
| |
| |
TEM Horn | |
| |
| |
| |
Log-Periodic | |
| |
| |
| |
Spiral | |
| |
| |
| |
Conventional Wideband Antennas | |
| |
| |
| |
Volcano Smoke | |
| |
| |
| |
Diamond Dipole | |
| |
| |
| |
Monofilar Helix | |
| |
| |
| |
Conical Spiral | |
| |
| |
| |
Monoloop | |
| |
| |
| |
Quad-Ridged Circular Horn | |
| |
| |
| |
Bi-Blade with Century Bandwidth | |
| |
| |
| |
Cone-Blade | |
| |
| |
| |
Vivaldi | |
| |
| |
| |
Impulse Radiating Antenna (IRA) | |
| |
| |
| |
Circular Disc Dipole | |
| |
| |
| |
Bow-Tie | |
| |
| |
| |
Planar Slot | |
| |
| |
| |
Experimental Verification of the Wideband Responses from Antennas | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
A Look at the Concept of Channel Capacity from a Maxwellian Viewpoint | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
History of Entropy and Its Evolution | |
| |
| |
| |
Different Formulations for the Channel Capacity | |
| |
| |
| |
Information Content of a Waveform | |
| |
| |
| |
Numerical Examples Illustrating the Relevance of the Maxwellian Physics in Characterizing the Channel Capacity | |
| |
| |
| |
Matched Versus Unmatched Receiving Dipole Antenna with a Matched Transmitting Antenna Operating in Free Space | |
| |
| |
| |
Use of Directive Versus Nondirective Matched Transmitting Antennas Located at Different Heights above the Earth for a Fixed Matched Receiver Height above Ground | |
| |
| |
| |
Conclusion | |
| |
| |
| |
Appendix: History of Entropy and Its Evolution | |
| |
| |
References | |
| |
| |
| |
Multiple-Input-Multiple-Output (MIMO) Antenna Systems | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Diversity in Wireless Communications | |
| |
| |
| |
Time Diversity | |
| |
| |
| |
Frequency Diversity | |
| |
| |
| |
Space Diversity | |
| |
| |
| |
Multiantenna Systems | |
| |
| |
| |
Multiple-Input-Multiple-Output (MIMO) Systems | |
| |
| |
| |
Channel Capacity of the MIMO Antenna Systems | |
| |
| |
| |
Channel Known at the Transmitter | |
| |
| |
| |
Water-filling Algorithm | |
| |
| |
| |
Channel Unknown at the Transmitter | |
| |
| |
| |
Alamouti Scheme | |
| |
| |
| |
Diversity-Multiplexing Tradeoff | |
| |
| |
| |
MIMO Under a Vector Electromagnetic Methodology | |
| |
| |
| |
MIMO Versus SISO | |
| |
| |
| |
More Appealing Results for a MIMO system | |
| |
| |
| |
Case Study: 1 | |
| |
| |
| |
Case Study: 2 | |
| |
| |
| |
Case Study: 3 | |
| |
| |
| |
Case Study: 4 | |
| |
| |
| |
Case Study: 5 | |
| |
| |
| |
Physics of MIMO in a Nutshell | |
| |
| |
| |
Line-of-Sight (LOS) MIMO Systems with Parallel Antenna Elements Oriented Along the Broadside Direction | |
| |
| |
| |
Line-of-Sight MIMO Systems with Parallel Antenna Elements Oriented Along the Broadside Direction | |
| |
| |
| |
Non-line-of-Sight MIMO Systems with Parallel Antenna Elements Oriented Along the Broadside Direction | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Use of the Output Energy Filter in Multiantenna Systems for Adaptive Estimation | |
| |
| |
| |
Summary | |
| |
| |
| |
Various Forms of the Optimum Filters | |
| |
| |
| |
Matched Filter (Cross-correlation filter) | |
| |
| |
| |
A Wiener Filter | |
| |
| |
| |
An Output Energy Filter (Minimum Variance Filter) | |
| |
| |
| |
Example of the Filters | |
| |
| |
| |
Direct Data Domain Least Squares Approaches to Adaptive Processing Based on a Single Snapshot of Data | |
| |
| |
| |
Eigenvalue Method | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Real Time Implementation of the Adaptive Procedure | |
| |
| |
| |
Direct Data Domain Least Squares Approach to Space-Time Adaptive Processing | |
| |
| |
| |
Two-Dimensional Generalized Eigenvalue Processor | |
| |
| |
| |
Least Squares Forward Processor | |
| |
| |
| |
Least Squares Backward Processor | |
| |
| |
| |
Least Squares Forward-Backward Processor | |
| |
| |
| |
Application of the Direct Data Domain Least Squares Techniques to Airborne Radar for Space-Time Adaptive Processing | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Minimum Norm Property for the Sum of the Adaptive Weights in Adaptive or in Space-Time Processing | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Review of the Direct Data Domain Least Squares Approach | |
| |
| |
| |
Review of Space-Time Adaptive Processing Based on the D3LS Method | |
| |
| |
| |
Minimum Norm Property of the Adaptive Weights at the DOA of the SOI for the 1-D Case and at Doppler Frequency and DOA for STAP | |
| |
| |
| |
Numerical Examples | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Using Real Weights in Adaptive and Space-Time Processing | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Formulation of a Direct Data Domain Least Squares Approach Using Real Weights | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results for Adaptive Processing | |
| |
| |
| |
Formulation of an Amplitude-only Direct Data Domain Least Squares Space-Time Adaptive Processing | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Phase-Only Adaptive and Space-Time Processing | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Formulation of the Direct Data Domain Least Squares Solution for a Phase-Only Adaptive System | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Formulation of a Phase-Only Direct Data Domain Least Squares Space-Time Adaptive Processing | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Simultaneous Multiple Adaptive Beamforming | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Formulation of a Direct Data Domain Approach for Multiple Beamforming | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Formulation of a Direct Data Domain Least Squares Approach for Multiple Beamforming in Space-Time Adaptive Processing | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Performance Comparison Between Statistical-Based and Direct Data Domain Least Squares Space-Time Adaptive Processing Algorithms | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Description of the Various Signals of Interest | |
| |
| |
| |
Modeling of the Signal-of-Interest | |
| |
| |
| |
Modeling of the Clutter | |
| |
| |
| |
Modeling of the Jammer | |
| |
| |
| |
Modeling of the Discrete Interferers | |
| |
| |
| |
Statistical-Based STAP Algorithms | |
| |
| |
| |
Full-Rank Optimum STAP | |
| |
| |
| |
Reduced-Rank STAP (Relative Importance of the Eigenbeam Method) | |
| |
| |
| |
Reduced-Rank STAP (Based on the Generalized Sidelobe Canceller) | |
| |
| |
| |
Direct Data Domain Least Squares STAP Algorithms | |
| |
| |
| |
Channel Mismatch | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Approximate Compensation for Mutual Coupling Using the In Situ Antenna Element Patterns | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Formulation of the New Direct Data Domain Least Squares Approach Approximately Compensating for the Effects of Mutual Coupling Using the In Situ Element Patterns | |
| |
| |
| |
Forward Method | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Reason for a Decline in the Performance of the Algorithm When the Intensity of the Jammer Is Increased | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Signal Enhancement Through Polarization Adaptivity on Transmit in a Near-Field MIMO Environment | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Signal Enhancement Methodology Through Adaptivity on Transmit | |
| |
| |
| |
Exploitation of the Polarization Properties in the Proposed Methodology | |
| |
| |
| |
Numerical Simulations | |
| |
| |
| |
Example 1 | |
| |
| |
| |
Example 2 | |
| |
| |
| |
Example 3 | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Direction of Arrival Estimation by Exploiting Unitary Transform in the Matrix Pencil Method and Its Comparison with ESPRIT | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
The Unitary Transform | |
| |
| |
| |
1-D Unitary Matrix Pencil Method Revisited | |
| |
| |
| |
Summary of the 1-D Unitary Matrix Pencil Method | |
| |
| |
| |
The 2-D Unitary Matrix Pencil Method | |
| |
| |
| |
Pole Pairing for the 2-D Unitary Matrix Pencil Method | |
| |
| |
| |
Computational Complexity | |
| |
| |
| |
Summary of the 2-D Unitary Matrix Pencil Method | |
| |
| |
| |
Simulation Results Related to the 2-D Unitary Matrix Pencil Method | |
| |
| |
| |
The ESPRIT Method | |
| |
| |
| |
Multiple Snapshot-Based Matrix Pencil Method | |
| |
| |
| |
Comparison of Accuracy and Efficiency Between ESPRIT and the Matrix Pencil Method | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
DOA Estimation Using Electrically Small Matched Dipole Antennas and the Associated Cramer-Rao Bound | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
DOA Estimation Using a Realistic Antenna Array | |
| |
| |
| |
Transformation Matrix Technique | |
| |
| |
| |
Cramer-Rao Bound for DOA Estimation | |
| |
| |
| |
DOA Estimation Using 0.1 [gamma] Long Antennas | |
| |
| |
| |
DOA Estimation Using Different Antenna Array Configurations | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Non-Conventional Least Squares Optimization for DOA Estimation Using Arbitrary-Shaped Antenna Arrays | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Signal Modeling | |
| |
| |
| |
DFT-Based DOA Estimation | |
| |
| |
| |
Non-conventional Least Squares Optimization | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
An Array of Linear Uniformly Spaced Dipoles | |
| |
| |
| |
An Array of Linear Non-uniformly Spaced Dipoles | |
| |
| |
| |
An Array Consisting of Mixed Antenna Elements | |
| |
| |
| |
An Antenna Array Operating in the Presence of Near-Field Scatterers | |
| |
| |
| |
Sensitivity of the Procedure Due to a Small Change in the Operating Environment | |
| |
| |
| |
Sensitivity of the Procedure Due to a Large Change in the Operating Environment | |
| |
| |
| |
An Array of Monopoles Mounted Underneath an Aircraft | |
| |
| |
| |
A Non-uniformly Spaced Nonplanar Array of Monopoles Mounted Under an Aircraft | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Broadband Direction of Arrival Estimations Using the Matrix Pencil Method | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Brief Overview of the Matrix Pencil Method | |
| |
| |
| |
Problem Formulation for Simultaneous Estimation of DOA and the Frequency of the Signal | |
| |
| |
| |
Cramer-Rao Bound for the Direction of Arrival and Frequency of the Signal | |
| |
| |
| |
Example Using Isotropic Point Sources | |
| |
| |
| |
Example Using Realistic Antenna Elements | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Adaptive Processing of Broadband Signals | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
Formulation of a Direct Data Domain Least Squares Method for Adaptive Processing of Finite Bandwidth Signals Having Different Frequencies | |
| |
| |
| |
Forward Method for Adaptive Processing of Broadband Signals | |
| |
| |
| |
Backward Method | |
| |
| |
| |
Forward-Backward Method | |
| |
| |
| |
Numerical Simulation Results | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
| |
Effect of Random Antenna Position Errors on a Direct Data Domain Least Squares Approach for Space-Time Adaptive Processing | |
| |
| |
| |
Summary | |
| |
| |
| |
Introduction | |
| |
| |
| |
EIRP Degradation of Array Antennas Due to Random Position Errors | |
| |
| |
| |
Example of EIRP Degradation in Antenna Arrays | |
| |
| |
| |
Simulation Results | |
| |
| |
| |
Conclusion | |
| |
| |
References | |
| |
| |
Index | |