The art and science of ultrawideband antennas:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Boston, Mass.
Artech House
2015
|
| Ausgabe: | 2. ed. |
| Schriftenreihe: | Artech House antennas and electromagnetics analysis library
|
| Schlagworte: | |
| Online-Zugang: | Klappentext Inhaltsverzeichnis |
| Beschreibung: | Includes bibliographical references and index |
| Beschreibung: | XXI, 563 S. Ill., graph. Darst. |
| ISBN: | 9781608079551 |
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| 245 | 1 | 0 | |a The art and science of ultrawideband antennas |c Hans G. Schantz |
| 250 | |a 2. ed. | ||
| 264 | 1 | |a Boston, Mass. |b Artech House |c 2015 | |
| 300 | |a XXI, 563 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
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| 500 | |a Includes bibliographical references and index | ||
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Datensatz im Suchindex
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| adam_text | N This comprehensive treatment of ultrawideband (UWB) antennas
and time-domain microwave engineering serves as an invaluable
practical reference for anyone involved in antenna and RF design
work. This authoritative volume enables readers to select the proper
UWB antennas for their applications, design and analyze UWB
antennas, and integrate these antennas in an RF system.
By applying time-domain thinking to problems of practical interest,
the reader will not only learn how to build and analyze antennas,
but also understand them at the most fundamental level.This
second edition is updated and expanded throughout, providing
readers with a history of antennas, numerous new problem sets
and examples, along with new information on plotting time-domain
field lines, time-domain reflectometry, matching techniques, and
more.This book also addresses system issues like spectral control
j and antenna efficiency.
Contents Overview: Introduction to UWB Antennas; History of
, / UWB Antennas; Antennas asTransducers; Antennas asTransformers;
Antennas as Radiators; Antennas as Energy Converters;Taxonomy
of UWB Antennas; Antennas in Systems.
Hans G. Schantz is cofounder and CTO of The Q-Track Corporation,
and a coinventor of NFER® indoor location technology. His prior
work experience includes IBM, the Lawrence Livermore National Lab,
The ElectroScience Lab of the Ohio State University, andTime
Domain Corporation. He earned his Ph.D. in physics from the
University of Texas at Austin.
Schantz introduces time domain methods in antenna engineering
and microwave techniques, which relate to ultrawideband signals
in this expanded second edition.The book is delightfully illuminating,
land includes well-researched historical roots of the antenna arts,
that are seldom encountered in contemporary textbooks.
- Dr. Kai Siwiak, CEO,TimeDerivative, Inc.
Table of Contents
Preface to the Second Edition xiii
Acknowledgments xix
Chapter 1 An Introduction to UWB Antennas 1
1.1 Antennas and Elephants 2
1.2 Three Centuries of UWB Antennas 4
1.3 What Is an Antenna? 6
1.3.1 Antennas as Transducers 7
1.3.2 Antennas as Transformers 8
1.3.3 Antennas as Radiators 9
1.3.4 Antennas as Energy Converters 10
1.4 UWB Antennas 11
1.4.1 AT axonomy of UWB Antennas 12
1.4.2 UWB Device and Systems Considerations 14
1.5 Conclusion 14
Endnotes 15
Chapter 2 A History of UWB Antennas 17
2.1 Nineteenth-Century UWB Antennas 18
2.1.1 Heinrich Hertz 19
2.1.2 Narrowband in Conception, UWB in Practice 21
2.1.3 Jagadis Chandra Bose 23
2.1.4 Oliver Lodge 24
2.1.5 Guglielmo Marconi 26
2.2 Twentieth-Century UWB Antennas 32
vii
viii The Art and Science of UWB Antennas
2.2.1 Rediscovery of the Biconical Antenna 34
2.2.2 Bulbous UWB Elements 35
2.2.3 Rediscovery of the Horn Antenna 38
2.2.4 Toward More Manufacturable Designs 41
2.2.5 Frequency-Independent Antennas 47
2.2.6 Origins of Ultrawideband Radio Technology 49
2.3 Twenty-First-Century UWB Antennas 52
2.3.1 Planar Monopole Antennas 53
2.3.2 Planar Dipole Antennas 54
2.3.3 Magnetic Antennas 55
2.3.4 Frequency-Notched UWB Antennas 56
2.3.5 Other Recent Advances 57
2.3.6 Progress in UWB Commercialization 57
2.4 UWB Antennas: What’s Ahead? 60
2.5 Conclusions 61
Problems 62
Endnotes 64
Chapter 3 Antennas as Transducers 73
3.1 Bandwidth 74
3.1.1 Calculating Bandwidth 75
3.1.2 Determining Antenna Bandwidth 77
3.1.3 Radiated Bandwidth 78
3.2 Dispersion 79
3.2.1 Example of a Dispersive Antenna 81
3.2.2 Example of a Nondispersive Antenna 83
3.2.3 Angular Dependence of Dispersion 85
3.3 Where Energy Goes 87
3.3.1 Antenna Pattern 87
3.3.2 Antenna Directivity, Gain, and Bandwidth 90
3.4 Pattern, Gain, and UWB Antennas 99
3.4.1 Reciprocity and UWB Antennas 100
3.4.2 Constant Gain Antennas 103
3.4.3 Constant Aperture Antennas 105
3.4.4 Other UWB Antennas 107
3.4.5 Gain and Aperture 109
3.5 Polarization 110
3.6 Antenna Matching 112
3.7 Antennas as Transducers 115
Problems 116
Endnotes 118
Chapter 4 Antennas as Transformers 121
4.1 Introduction to Antenna Impedance 123
Table of Contents ix
4.1.1 UWB Versus Narrowband Antenna Impedance 123
4.1.2 Controlling Antenna Impedance 124
4.2 Transmission Lines 127
4.2.1 Early Developments 127
4.2.2 Twin-Lead Transmission Line 136
4.2.3 Coaxial Transmission Line 137
4.2.4 Parallel Plane Transmission Line 138
4.2.5 Microstrip Line 139
4.3 Transition from Feed Line to Free Space 142
4.3.1 Twin-Lead Transition 142
4.3.2 Coaxial Transitions 142
4.3.3 Planar Transmission Line Transitions 143
4.4 Impedance Transformation and Matching 147
4.4.1 The Terminated, Lossless Line 147
4.4.2 Time-Domain Reflectometry 152
4.4.3 Harmonic Signals 156
4.4.4 The Smith Chart and Matching Networks 158
4.4.5 Broadband Matching 170
4.5 Coupling Balanced and Unbalanced Lines 176
4.5.1 Chokes 177
4.5.2 Baiun Transformers 179
4.5.3 Compatibility 181
4.6 Antennas as Transformers 182
Problems 182
Endnotes 185
Chapter 5 Antennas as Radiators 191
5.1 Time Domain and Frequency Domain 191
5.1.1 Impulses and Sine Waves 193
5.1.2 Basic Principles of the Frequency and Time Domain
194
5.1.3 Time-Domain Signals 196
5.1.4 Time Domain Versus Frequency Domain 212
5.2 Maxwell’s Equations 213
5.2.1 Generalized Coordinates and Retardation 216
5.2.2 Electromagnetic Waves 217
5.2.3 Jefimenko Form of the Biot-Savart
and Coulomb Laws 221
5.2.4 Right-Hand Rule for Radiation 222
5.2.5 Time-Domain Representation of Plane Waves 223
5.3 Linear Antennas 226
5.3.1 Linear Antenna Behavior 226
5.3.2 Examples 230
5.3.3 Summary 236
X
The Art and Science of UWB Antennas
5.4 Dipole Fields 237
5.4.1 Electric Dipole Fields 238
5.4.2 Magnetic Dipole Fields 240
5.4.3 Harmonic Dipole Fields 243
5.4.4 Exponentially Decaying Dipole Fields 247
5.5 Basic Antenna Physics 249
5.5.1 Antenna Differentiation 249
5.5.2 The Radiation Field Approximation 251
5.5.3 Radiation of a DC Signal? 254
5.5.4 Field Lines 256
5.6 Antennas as Radiators 262
Problems 263
Endnotes 266
Chapter 6 Antennas as Energy Converters 271
6.1 Motivation 272
6.1.1 Models and Reality 272
6.1.2 Is Radiation “Kinky”? 273
6.1.3 The Maxwellian Perspective 277
6.2 Localization and Flow of Electromagnetic Energy 279
6.2.1 Localizing Electromagnetic Energy 279
6.2.2 The Flow of Electromagnetic Energy 282
6.2.3 Puzzles and Paradoxes of
Electromagnetic Energy Flow 284
6.2.4 Electromagnetic Velocity 289
6.2.5 Causal Surfaces 292
6.3 Electromagnetic Energy in Simple Problems 294
6.3.1 Energy in Superposition 294
6.3.2 Energy in Standing Waves 301
6.4 Dipole Field Energy 305
6.4.1 Exponentially Decaying Dipoles 307
6.4.2 Damped Harmonic Dipoles 309
6.4.3 Harmonic Dipoles 314
6.4.4 Time-Domain Excitations 322
6.5 Optimal Element Design 330
6.5.1 Fatter Is Better 331
6.5.2 Optimal Dipole Shape 332
6.5.3 Optimal Loop Shape 333
6.6 Fundamental Limits on Antenna Size 334
6.6.1 The Chu-Harrington Limit 335
6.6.2 The McLean Derivation of Small Antenna Q 336
6.6.3 Is There a Q in UWB? 337
6.6.4 g-Based Antenna Limits in UWB Practice 343
Table of Contents xi
6.6.5 Energy-Flow-Based Limits to
Antenna Performance 347
6.7 Antennas as Energy Converters 354
Problems 356
Endnotes 358
Chapter 7 A Taxonomy of UWB Antennas 363
7.1 Frequency-Independent Antennas 364
7.1.1 Basic Principles of
Frequency-Independent Antennas 364
7.1.2 Spiral Antennas 366
7.1.3 Log-Periodic Antennas 369
7.1.4 Fractal and Bent Wire Antennas 371
7.2 Small-Element Electric Antennas 374
7.2.1 Conical Antennas 374
7.2.2 Planar Conical Antennas 382
7.2.3 Bulbous Antennas 387
7.2.4 Planar Bulbous Antennas 393
7.2.5 Other Planar Monopole UWB Antennas 408
7.2.6 Physical Behavior of Planar UWB Antennas 410
7.2.7 General Principles of Small-Element Design 414
7.2.8 Summary of Small-Element Electric Antennas 418
7.3 Small-Element Magnetic Antennas 420
7.3.1 Complementarity 420
7.3.2 UWB Slot Antennas 424
7.3.3 Large Current Radiator Antennas 427
7.3.4 Monoloop Antennas 429
7.3.5 Loop Antennas 432
7.3.6 Summary of Small-Element Magnetic Antennas 435
7.4 Electrically Small Antennas 436
7.4.1 Antenna Scaling 437
7.4.2 Dielectric Loading 438
7.4.3 Conducting Enclosure Antennas 440
7.4.4 Electric-Magnetic Antenna 442
7.4.5 Summary of Electrically-Small antennas 443
7.5 Directional Electrically Small Antennas 444
7.5.1 The Beverage Loop 444
7.5.2 Ewes, Flags, and K9AYs 446
7.5.3 Multipole Synthesis 446
7.5.4 Performance of Multipole Designs 448
7.5.5 Experimental Results 451
7.6 Horn Antennas 453
7.6.1 Conical Plate Horn Antenna 454
7.6.2 Termination of Horn Antennas 456
The Art and Science of UWB Antennas
xii
7.6.3 Planar Horn Antennas 458
7.6.4 Other Horn Antennas 465
7.6.5 Summary of Horn Antennas 468
7.7 Re Hector Antennas 469
7.7.1 Planar Reflector 469
7.7.2 Comer Reflectors 473
7.7.3 Parabolic Cylinder Reflectors 476
7.7.4 Impulse Radiating Antennas 478
7.7.5 Summary of Reflector Antennas 478
7.8 Summary 479
Problems 480
Endnotes 482
Chapter 8 UWB Antennas in Systems 495
8.1 Antenna Spectral Control 496
8.1.1 Antenna Scaling 496
8.1.2 Antenna Filtering 497
8.1.3 Antennas and Spectral Control 507
8.2 Antenna Efficiency 508
8.2.1 Efficiency Theory 509
8.2.2 Efficiency Measurement 510
8.3 Antenna Directivity 519
8.3.1 Omni Versus Directional 520
8.3.2 Amplitude Comparison Direction Finding 521
8.3.3 Small-Aperture UWB Direction Finding 523
8.3.4 Applications 524
8.3.5 Conclusion 526
8.4 UWB Antennas in Systems 526
8.5 Summary and Conclusions 527
Problems 529
Endnotes 529
Appendix A Energy Around Time-Harmonic Dipoles 533
Appendix B Spherical Time-Domain Electromagnetics 539
About the Author 549
Index 551
|
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| discipline | Elektrotechnik Elektrotechnik / Elektronik / Nachrichtentechnik |
| edition | 2. ed. |
| format | Book |
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| id | DE-604.BV042564499 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T01:25:02Z |
| institution | BVB |
| isbn | 9781608079551 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-027998136 |
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| owner_facet | DE-703 |
| physical | XXI, 563 S. Ill., graph. Darst. |
| publishDate | 2015 |
| publishDateSearch | 2015 |
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| publisher | Artech House |
| record_format | marc |
| series2 | Artech House antennas and electromagnetics analysis library |
| spelling | Schantz, Hans Verfasser (DE-588)135652553 aut The art and science of ultrawideband antennas Hans G. Schantz 2. ed. Boston, Mass. Artech House 2015 XXI, 563 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier Artech House antennas and electromagnetics analysis library Includes bibliographical references and index Ultra-wideband antennas Ultraweitband (DE-588)4830023-8 gnd rswk-swf Antenne (DE-588)4002210-9 gnd rswk-swf Breitbandantenne (DE-588)4146531-3 gnd rswk-swf Antenne (DE-588)4002210-9 s Ultraweitband (DE-588)4830023-8 s DE-604 Breitbandantenne (DE-588)4146531-3 s Digitalisierung UB Bayreuth - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027998136&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Klappentext Digitalisierung UB Bayreuth - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027998136&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Schantz, Hans The art and science of ultrawideband antennas Ultra-wideband antennas Ultraweitband (DE-588)4830023-8 gnd Antenne (DE-588)4002210-9 gnd Breitbandantenne (DE-588)4146531-3 gnd |
| subject_GND | (DE-588)4830023-8 (DE-588)4002210-9 (DE-588)4146531-3 |
| title | The art and science of ultrawideband antennas |
| title_auth | The art and science of ultrawideband antennas |
| title_exact_search | The art and science of ultrawideband antennas |
| title_full | The art and science of ultrawideband antennas Hans G. Schantz |
| title_fullStr | The art and science of ultrawideband antennas Hans G. Schantz |
| title_full_unstemmed | The art and science of ultrawideband antennas Hans G. Schantz |
| title_short | The art and science of ultrawideband antennas |
| title_sort | the art and science of ultrawideband antennas |
| topic | Ultra-wideband antennas Ultraweitband (DE-588)4830023-8 gnd Antenne (DE-588)4002210-9 gnd Breitbandantenne (DE-588)4146531-3 gnd |
| topic_facet | Ultra-wideband antennas Ultraweitband Antenne Breitbandantenne |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027998136&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=027998136&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT schantzhans theartandscienceofultrawidebandantennas |