| Preface | p. xiii |
| Introduction | p. 1 |
| How to Apply the Moment Method to Wire Antenna Analysis | p. 7 |
| Introduction | p. 7 |
| Moment Method Formulation | p. 8 |
| Boundary Condition and Formulation | p. 8 |
| Network Equivalence | p. 14 |
| Calculation of Z[subscript mn] | p. 15 |
| Impedance Loading | p. 15 |
| Transmitting Antennas | p. 17 |
| Current Distribution and Input Impedance | p. 17 |
| Radiation Pattern and Power Gain | p. 19 |
| Efficiency | p. 21 |
| Receiving Antennas | p. 22 |
| Current Distribution and Received Power | p. 22 |
| Effective Area | p. 26 |
| Scattering Cross Section | p. 27 |
| Enhancement of Antenna Performance by Reactive Loading | p. 28 |
| VSWR | p. 28 |
| Power Gain | p. 29 |
| Scattering Cross Section | p. 30 |
| Antenna Characteristic Analysis Program (ACAP) | p. 31 |
| Input of Antenna Geometry | p. 32 |
| Wire Connection Treatment | p. 32 |
| Output of Antenna Characteristics | p. 34 |
| Conclusions | p. 37 |
| ACAP Program | p. 39 |
| Evaluation of the Basic Performance of Microstrip Antennas | p. 53 |
| Introduction | p. 53 |
| Basic Properties of Microstrip Antennas | p. 53 |
| Radiation Pattern | p. 53 |
| Resonant Frequency of the MSA | p. 57 |
| Unloaded Q(Q[subscript o]), Radiation Efficiency [eta] Bandwidth (BW), and Directivity Gain (G[subscript d]) | p. 58 |
| Impedance Characteristics | p. 61 |
| Influence of the Finite Ground Plane on Radiation Pattern | p. 66 |
| Estimation of the E-Plane Pattern | p. 67 |
| Estimation of the H-Plane Pattern | p. 68 |
| Circularly Polarized Microstrip Antennas | p. 68 |
| Characteristics of Small Microstrip Antennas | p. 71 |
| Basic Configuration | p. 71 |
| Radiation Efficiency [eta] and Frequency Bandwidth (BW) | p. 72 |
| Shorted-Plane-Controlled Type of MSA | p. 73 |
| Beam Shaping of Microstrip Antennas | p. 75 |
| Some Considerations on Planar Arrays Composed of MSA | p. 78 |
| Conclusions | p. 80 |
| Key Points in the Design and Measurement of Microstrip Antennas | p. 83 |
| Introduction | p. 83 |
| Basic Theory | p. 84 |
| Transmission-Line Model | p. 84 |
| Cavity Model | p. 97 |
| Design Procedure | p. 111 |
| Typical Design Procedure | p. 111 |
| Design Procedure Considering Bandwidth | p. 113 |
| Design Example | p. 119 |
| Error Estimation | p. 124 |
| Wideband Techniques | p. 126 |
| Various Techniques | p. 126 |
| Some Problems and Corresponding Measures That Can Be Taken | p. 136 |
| Circular Polarization | p. 144 |
| Dual-Feed Type | p. 144 |
| Single-Feed Type | p. 144 |
| Conclusions | p. 155 |
| Analysis of Planar Inverted-F Antennas and Antenna Design for Portable Radio Equipment | p. 161 |
| Introduction | p. 161 |
| Analysis by Spatial Network Method (SNM) | p. 162 |
| Analysis Model | p. 162 |
| Effects of Analysis Area Size | p. 163 |
| Numerical Results | p. 165 |
| Electric Field and Current Distribution | p. 165 |
| Resonant Frequency | p. 169 |
| Bandwidth | p. 174 |
| Design of a Planar Inverted-F Antenna on a Portable Radio Housing | p. 175 |
| Resonant Frequency | p. 175 |
| Bandwidth | p. 175 |
| Effective Gain in Mobile Radio Environment | p. 177 |
| Conclusions | p. 179 |
| Design and Analysis of Small-Aperture Antennas | p. 181 |
| Introduction | p. 181 |
| Directivity Decomposition of Aperture Antennas | p. 184 |
| Directivity Calculation Method | p. 187 |
| Remarks on Radiated Field Calculation of Small-Aperture Antennas | p. 190 |
| Problems | p. 190 |
| Diffraction Effects at Reflector Edges | p. 190 |
| Applicability of the Aperture Field Method in Relation to the Distance From an Antenna | p. 192 |
| Geometrical Theory of Diffraction (GTD) and its Applicability | p. 194 |
| Examples of Small-Aperture Antenna Design | p. 196 |
| Axisymmetrical Cassegrain Antenna | p. 196 |
| Shaped Offset Dual-Reflector Antenna | p. 200 |
| Short Backfire Antenna | p. 202 |
| Conclusions | p. 205 |
| Design and Measurement of Small AM Broadcasting Antennas | p. 207 |
| Introduction | p. 207 |
| Design | p. 207 |
| Construction | p. 207 |
| Feed-Point Impedance | p. 209 |
| Lower Limit of Antenna Efficiency Regulated by the Ministry of Posts and Telecommunications (Japan) | p. 210 |
| Antenna Efficiency | p. 211 |
| Measurement | p. 214 |
| Ground Conductivity and Grounding Resistance | p. 214 |
| Impedance Meter | p. 215 |
| Antenna Efficiency | p. 215 |
| Techniques for Small AM Broadcasting Antennas | p. 216 |
| Base-Insulated and Guyed Antennas | p. 217 |
| Base-Insulated and Self-Supporting Antennas | p. 218 |
| Base-Grounded and Self-Supporting Antennas | p. 219 |
| Mutual Coupling Effects Between Antenna Elements on Antenna Performance | p. 221 |
| Introduction | p. 221 |
| The Effects of Mutual Coupling Between Antenna Elements on Antenna Performance | p. 221 |
| Reduction of Mutual Coupling Effects | p. 225 |
| Analysis and Measurement of Mutual Coupling | p. 228 |
| Analysis of Mutual Coupling | p. 228 |
| Measurement of Mutual Coupling | p. 233 |
| Use of Mutual Coupling Effects | p. 236 |
| Conclusions | p. 238 |
| Some Considerations of Small Antenna Measurements | p. 241 |
| Introduction | p. 241 |
| Definition of Small Antennas | p. 242 |
| Things to Consider Prior to Measurement | p. 243 |
| Small Antennas | p. 243 |
| Antenna Structure | p. 246 |
| Balanced-Unbalanced Transformation | p. 247 |
| The Effect of Nearby Conducting Materials | p. 249 |
| The Accuracy, Precision, and Stability of the Instrument | p. 250 |
| Other Factors | p. 250 |
| Measurements | p. 251 |
| Impedance | p. 251 |
| Radiation Pattern | p. 254 |
| Efficiency | p. 257 |
| Gain | p. 262 |
| Related Subjects | p. 263 |
| Environmental Effects | p. 263 |
| Skill in Performing Measurement | p. 264 |
| Conclusions | p. 264 |
| Index | p. 267 |
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