Description
Book SynopsisDespite previous books on UWB systems for radar systems and more recently, communications, no book exists that deals with the antennas and propagation of UWB for both communication and radar systems. This text provides up-to-date material on fundamental design concepts and principles for UWB antennas and arrays.
Table of ContentsEditors xv
Prime Contributors xvii
Preface xxi
Acknowledgments xxvii
Abbreviations & Acronyms xxix
1 Introduction to UWB Signals and Systems 1
Andreas F. Molisch
1.1 History of UWB 1
1.2 Motivation 3
1.3 UWB Signals and Systems 6
1.4 Frequency Regulation 12
1.5 Applications, Operating Scenarios and Standardisation 13
1.6 System Outlook 15
References 16
Part I Fundamentals 19
Introduction to Part I 21
Wasim Q. Malik and David J. Edwards
2 Fundamental Electromagnetic Theory 25
Mischa Dohler
2.1 Introduction 25
2.2 Maxwell’s Equations 25
2.3 Resulting Principles 30
References 30
3 Basic Antenna Elements 31
Mischa Dohler
3.1 Introduction 31
3.2 Hertzian Dipole 31
3.3 Antenna Parameters and Terminology 34
3.4 Basic Antenna Elements 42
References 47
4 Antenna Arrays 49
Ernest E. Okon
4.1 Introduction 49
4.2 Point Sources 49
4.3 The Principle of Pattern Multiplication 55
4.4 Linear Arrays of n Elements 56
4.5 Linear Broadside Arrays with Nonuniform Amplitude Distributions 58
4.6 Planar Arrays 62
4.7 Design Considerations 65
4.8 Summary 66
References 66
5 Beamforming 67
Ben Allen
5.1 Introduction 67
5.2 Antenna Arrays 69
5.3 Adaptive Array Systems 73
5.4 Beamforming 75
5.5 Summary 86
References 87
6 Antenna Diversity Techniques 89
Junsheng Liu, Wasim Q. Malik, David J. Edwards and Mohammad Ghavami
6.1 Introduction 89
6.2 A Review of Fading 89
6.3 Receive Diversity 93
6.4 Transmit Diversity 100
6.5 MIMO Diversity Systems 102
References 103
Part II Antennas for UWB Communications 105
Introduction to Part II 107
Ernest E. Okon
7 Theory of UWB Antenna Elements 111
Xiaodong Chen
7.1 Introduction 111
7.2 Mechanism of UWB Monopole Antennas 112
7.3 Planar UWB Monopole Antennas 121
7.4 Planar UWB Slot Antennas 132
7.5 Time-Domain Characteristics of Monopoles 140
7.6 Summary 144
Acknowledgements 144
References 144
8 Antenna Elements for Impulse Radio 147
Zhi Ning Chen
8.1 Introduction 147
8.2 UWB Antenna Classification and Design Considerations 148
8.3 Omnidirectional and Directional Designs 153
8.4 Summary 160
References 161
9 Planar Dipole-like Antennas for Consumer Products 163
Peter Massey
9.1 Introduction 163
9.2 Computer Modelling and Measurement Techniques 164
9.3 Bicone Antennas and the Lossy Transmission Line Model 164
9.4 Planar Dipoles 167
9.5 Practical Antennas 178
9.6 Summary 194
Acknowledgements 195
References 195
10 UWB Antenna Elements for Consumer Electronic Applications 197
Dirk Manteuffel
10.1 Introduction 197
10.2 Numerical Modelling and Extraction of the UWB Characterisation 199
10.3 Antenna Design and Integration 205
10.4 Propagation Modelling 214
10.5 System Analysis 215
10.6 Conclusions 218
References 220
11 Ultra-wideband Arrays 221
Ernest E. Okon
11.1 Introduction 221
11.2 Linear Arrays 221
11.3 Null and Maximum Directions for Uniform Arrays 225
11.4 Phased Arrays 230
11.5 Elements for UWB Array Design 232
11.6 Modelling Considerations 234
11.7 Feed Configurations 234
11.8 Design Considerations 238
11.9 Summary 239
References 240
12 UWB Beamforming 241
Mohammad Ghavami and Kaveh Heidary
12.1 Introduction 241
12.2 Basic Concept 242
12.3 A Simple Delay-line Transmitter Wideband Array 243
12.4 UWB Mono-pulse Arrays 249
12.5 Summary 257
References 258
Part III Propagation Measurements and Modelling for UWB Communications 259
Introduction to Part III 261
Mischa Dohler and Ben Allen
13 Analysis of UWB Signal Attenuation Through Typical Building Materials 265
Domenico Porcino
13.1 Introduction 265
13.2 A Brief Overview of Channel Characteristics 267
13.3 The Materials Under Test 270
13.4 Experimental Campaign 272
13.5 Conclusions 281
References 281
14 Large- and Medium-scale Propagation Modelling 283
Mischa Dohler, Junsheng Liu, R. Michael Buehrer, Swaroop Venkatesh and Ben Allen
14.1 Introduction 283
14.2 Deterministic Models 284
14.3 Statistical-Empirical Models 297
14.4 Standardised Reference Models 303
14.5 Conclusions 306
References 306
15 Small-scale Ultra-wideband Propagation Modelling 309
Swaroop Venkatesh, R. Michael Buehrer, Junsheng Liu and Mischa Dohler
15.1 Introduction 309
15.2 Small-scale Channel Modelling 310
15.3 Spatial Modelling 321
15.4 IEEE 802.15.3a Standard Model 324
15.5 IEEE 802.15.4a Standard Model 325
15.6 Summary 327
References 327
16 Antenna Design and Propagation Measurements and Modelling for UWBWireless BAN 331
Yang Hao, Akram Alomainy and Yan Zhao
16.1 Introduction 331
16.2 Propagation Channel Measurements and Characteristics 332
16.3 WBAN Channel Modelling 345
16.4 UWB System-Level Modelling of Potential Body-Centric Networks 353
16.5 Summary 355
References 358
17 Ultra-wideband Spatial Channel Characteristics 361
Wasim Q. Malik, Junsheng Liu, Ben Allen and David J. Edwards
17.1 Introduction 361
17.2 Preliminaries 361
17.3 UWB Spatial Channel Representation 362
17.4 Characterisation Techniques 363
17.5 Increase in the Communication Rate 364
17.6 Signal Quality Improvement 370
17.7 Performance Parameters 375
17.8 Summary 381
References 381
Part IV UWB Radar, Imaging and Ranging 385
Introduction to Part IV 387
Anthony K. Brown
18 Localisation in NLOS Scenarios with UWB Antenna Arrays 389
Thomas Kaiser, Christiane Senger, Amr Eltaher and Bamrung Tau Sieskul
18.1 Introduction 389
18.2 Underlying Mathematical Framework 394
18.3 Properties of UWB Beamforming 398
18.4 Beamloc Approach 401
18.5 Algorithmic Framework 403
18.6 Time-delay Estimation 404
18.7 Simulation Results 406
18.8 Conclusions 410
References 410
19 Antennas for Ground-penetrating Radar 413
Ian Craddock
19.1 Introduction 413
19.2 GPR Example Applications 413
19.3 Analysis and GPR Design 419
19.4 Antenna Elements 425
19.5 Antenna Measurements, Analysis and Simulation 430
19.6 Conclusions 433
Acknowledgements 434
References 434
20 Wideband Antennas for Biomedical Imaging 437
Ian Craddock
20.1 Introduction 437
20.2 Detection and Imaging 437
20.3 Waveform Choice and Antenna Design Criteria 440
20.4 Antenna Elements 441
20.5 Measurements, Analysis and Simulation 445
20.6 Conclusions 447
Acknowledgements 448
References 448
21 UWB Antennas for Radar and Related Applications 451
Anthony K. Brown
21.1 Introduction 451
21.2 Medium- and Long-Range Radar 452
21.3 UWB Reflector Antennas 453
21.4 UWB Feed Designs 459
21.5 Feeds with Low Dispersion 461
21.6 Summary 468
References 468
Index 471
