Plasma Antennas

Plasma Antennas......Page 2
Contents......Page 8
Foreword......Page 16
Preface......Page 18
Acknowledgments......Page 22
1 Introduction......Page 24
References......Page 30
2.1 Mathematical Models of Plasma Physics......Page 36
2.2 Man-Made Plasmas and Some Applications......Page 37
2.3 Basic Physics of Reflection and Transmission from a Plasma Slab Barrier......Page 38
2.4 Experiments of Scattering Off of a Plasma Cylinder......Page 40
2.5 Governing Plasma Fluid Equations for Applications to Plasma Antennas......Page 41
2.6 Incident Signal on a Cylindrical Plasma......Page 44
2.8 Plasma Antenna Poynting Vector......Page 45
2.9 Some Finite Element Solution Techniques for Plasma Antennas......Page 48
2.9.2 Calculation of Scaling Function......Page 51
References......Page 53
3.1 Net Radiated Power from a Center-Fed Dipole Plasma Antenna......Page 54
3.2 Reconfigurable Impedance of a Plasma Antenna......Page 56
3.3 Thermal Noise in Plasma Antennas......Page 57
References......Page 59
4.2 Electrical Safety Warning......Page 60
4.3 Building a Basic Plasma Antenna: Design I......Page 61
4.4 Building a Basic Plasma Antenna: Design II......Page 64
4.5 Materials......Page 65
4.6 Building a Basic Plasma Antenna: Design III......Page 67
5.2 Physics of Reflection and Transmission of Electromagnetic Waves Through Plasma......Page 68
5.3.2 Schematic Conceptual Design of Stacked Plasma Antenna Arrays......Page 71
5.4 Cosite Interference Reduction Using Plasma Antennas......Page 72
5.5 Plasma Antenna Nesting Experiments......Page 73
References......Page 74
6.2 The Smart Plasma Antenna Design: The Windowing Concept......Page 76
6.2.2 Multiband and Multilobe or Both Plasma Antennas Concept......Page 79
6.3 Theoretical Analysis with Numerical Results of Plasma Windows......Page 80
6.3.1 Geometric Construction......Page 82
6.3.2 Electromagnetic Boundary Value Problem......Page 86
6.3.3 Partial Wave Expansion: Addition Theorem for Hankel Functions......Page 87
6.3.4 Setting Up the Matrix Problem......Page 88
6.3.6 Far-Field Radiation Pattern......Page 89
6.3.8 Dissipation in the Plasma Window Structure: Energy Conservation in an Open Resonant Cavity......Page 90
References......Page 101
7.2 Smart Antennas......Page 102
7.3 Early Design and Experimental Work for the Smart Plasma Antenna......Page 103
7.4 Microcontroller for the Smart Plasma Antenna......Page 107
7.6 Reconfigurable Bandwidth of the Smart Plasma Antenna......Page 109
7.7 Effect of Polarization on Plasma Tubes in the Smart Plasma Antenna......Page 111
7.8 Generation of Dense Plasmas at Low Average Power Input by Power Pulsing: An Energy-Efficient Technique to Obtain High-Frequency Plasma Antennas......Page 113
7.9 Fabry-Perot Resonator for Faster Operation of the Smart Plasma Antenna......Page 116
7.9.1 Mathematical Model for a Plasma Fabry-Perot Cavity......Page 118
7.9.2 Slab Plasma......Page 119
7.9.3 Cylindrical Plasma......Page 121
7.10.2 GPS-Aided and GPS-Free Positioning......Page 126
7.10.3 Multihop Meshed Wireless Distribution Network Architecture......Page 129
7.10.4 Reconfigurable Beamwidth and Lobe Number......Page 131
7.10.5 Adaptive Directionality......Page 133
7.10.6 Cell Tower Setting......Page 134
References......Page 135
8.1 Introduction......Page 136
8.2 Theoretical Calculations and Numerical Results......Page 137
8.2.1 Method of Calculation......Page 138
8.2.2 Scattering from a Partially Conducting Cylinder......Page 140
8.3.1 Switchable Bandstop Filter......Page 146
8.3.2 Switchable Reflector......Page 147
References......Page 150
9.2 Fundamental Plasma Antenna Experiments......Page 152
9.3 Suppressing or Eliminating EMI Noise Created by the Spark-Gap Technique......Page 161
9.5 Plasma Waveguides......Page 163
9.6 Plasma Frequency Selective Surfaces......Page 164
9.7 Pulsing Technique......Page 167
9.8 Plasma Antenna Nesting Experiment......Page 169
9.9.2 The High-Power Problem......Page 171
9.9.3 The High-Power Solution......Page 173
9.9.4 Experimental Confirmation......Page 174
9.9.5 Conclusions on High-Power Plasma Antennas......Page 175
9.11 Plasma Density Plasma Frequency Measurements with a Microwave Interferometer and Preionization......Page 177
9.11.1 Experiments on the Reflection in the S-Band Waveguide at 3.0 GHz with High Purity Argon Plasma......Page 182
9.12 Ruggedization and Mechanical Robustness of Plasma Antennas......Page 185
9.12.2 Embedded Plasma Antenna in SynFoam......Page 186
9.13 Miniaturization of Plasma Antennas......Page 191
References......Page 192
10.2 Multipole Plasma Antenna Designs and Far Fields......Page 194
References......Page 198
11.2 Data Rates......Page 200
11.3 Satellite Plasma Antenna Concepts and Designs......Page 203
References......Page 207
12.1 Introduction......Page 210
12.2 Modified Nyquist Theorem and Thermal Noise......Page 211
References......Page 216
About the Author......Page 218
Index......Page 220