The art and science of ultrawideband antennas
By: Hans Schantz
Edition: Second edition.
Series: Artech House antennas and propagation library; Artech House antennas and propagation library
Publisher: Artech House; Artech House Publishers
Published: 2015
Place of publication: Boston
Language: eng
Number of pages: 563
ISBN-13: 9781608079551
Subjects: Ultra-wideband antennas
Other titles: Ultrawideband antennas
Notes: Includes bibliographical references and index.
Table of contents: title: Machine generated contents note: 1.1.Antennas and Elephants; title: 1.2.Three Centuries of UWB Antennas; title: 1.3.What Is an Antenna?; title: 1.3.1.Antennas as Transducers; title: 1.3.2.Antennas as Transformers; title: 1.3.3.Antennas as Radiators; title: 1.3.4.Antennas as Energy Converters; title: 1.4.UWB Antennas; title: 1.4.1.A Taxonomy of UWB Antennas; title: 1.4.2.UWB Device and Systems Considerations; title: 1.5.Conclusion; title: Endnotes; title: 2.1.Nineteenth-Century UWB Antennas; title: 2.1.1.Heinrich Hertz; title: 2.1.2.Narrowband in Conception, UWB in Practice; title: 2.1.3.Jagadis Chandra Bose; title: 2.1.4.Oliver Lodge; title: 2.1.5.Guglielmo Marconi; title: 2.2.Twentieth-Century UWB Antennas; title: 2.2.1.Rediscovery of the Biconical Antenna; title: 2.2.2.Bulbous UWB Elements; title: 2.2.3.Rediscovery of the Horn Antenna; title: 2.2.4.Toward More Manufacturable Designs; title: 2.2.5.Frequency-Independent Antennas; title: 2.2.6.Origins of Ultrawideband Radio Technology; title: 2.3.Twenty-First-Century UWB Antennas; title: 2.3.1.Planar Monopole Antennas; title: 2.3.2.Planar Dipole Antennas; title: 2.3.3.Magnetic Antennas; title: 2.3.4.Frequency-Notched UWB Antennas; title: 2.3.5.Other Recent Advances; title: 2.3.6.Progress in UWB Commercialization; title: 2.4.UWB Antennas: What's Ahead?; title: 2.5.Conclusions; title: Problems; title: Endnotes; title: 3.1.Bandwidth; title: 3.1.1.Calculating Bandwidth; title: 3.1.2.Determining Antenna Bandwidth; title: 3.1.3.Radiated Bandwidth; title: 3.2.Dispersion; title: 3.2.1.Example of a Dispersive Antenna; title: 3.2.2.Example of a Nondispersive Antenna; title: 3.2.3.Angular Dependence of Dispersion; title: 3.3.Where Energy Goes; title: 3.3.1.Antenna Pattern; title: 3.3.2.Antenna Directivity, Gain, and Bandwidth; title: 3.4.Pattern, Gain, and UWB Antennas; title: 3.4.1.Reciprocity and UWB Antennas; title: 3.4.2.Constant Gain Antennas; title: 3.4.3.Constant Aperture Antennas; title: 3.4.4.Other UWB Antennas; title: 3.4.5.Gain and Aperture; title: 3.5.Polarization; title: 3.6.Antenna Matching; title: 3.7.Antennas as Transducers; title: Problems; title: Endnotes; title: 4.1.Introduction to Antenna Impedance; title: 4.1.1.UWB Versus Narrowband Antenna Impedance; title: 4.1.2.Controlling Antenna Impedance; title: 4.2.Transmission Lines; title: 4.2.1.Early Developments; title: 4.2.2.Twin-Lead Transmission Line; title: 4.2.3.Coaxial Transmission Line; title: 4.2.4.Parallel Plane Transmission Line; title: 4.2.5.Microstrip Line; title: 4.3.Transition from Feed Line to Free Space; title: 4.3.1.Twin-Lead Transition; title: 4.3.2.Coaxial Transitions; title: 4.3.3.Planar Transmission Line Transitions; title: 4.4.Impedance Transformation and Matching; title: 4.4.1.The Terminated, Lossless Line; title: 4.4.2.Time-Domain Reflectometry; title: 4.4.3.Harmonic Signals; title: 4.4.4.The Smith Chart and Matching Networks; title: 4.4.5.Broadband Matching; title: 4.5.Coupling Balanced and Unbalanced Lines; title: 4.5.1.Chokes; title: 4.5.2.Balun Transformers; title: 4.5.3.Compatibility; title: 4.6.Antennas as Transformers; title: Problems; title: Endnotes; title: 5.1.Time Domain and Frequency Domain; title: 5.1.1.Impulses and Sine Waves; title: 5.1.2.Basic Principles of the Frequency and Time Domain; title: 5.1.3.Time-Domain Signals; title: 5.1.4.Time Domain Versus Frequency Domain; title: 5.2.Maxwell's Equations; title: 5.2.1.Generalized Coordinates and Retardation; title: 5.2.2.Electromagnetic Waves; title: 5.2.3.Jefimenko Form of the Biot-Savart and Coulomb Laws; title: 5.2.4.Right-Hand Rule for Radiation; title: 5.2.5.Time-Domain Representation of Plane Waves; title: 5.3.Linear Antennas; title: 5.3.1.Linear Antenna Behavior; title: 5.3.2.Examples; title: 5.3.3.Summary; title: 5.4.Dipole Fields; title: 5.4.1.Electric Dipole Fields; title: 5.4.2.Magnetic Dipole Fields; title: 5.4.3.Harmonic Dipole Fields; title: 5.4.4.Exponentially Decaying Dipole Fields; title: 5.5.Basic Antenna Physics; title: 5.5.1.Antenna Differentiation; title: 5.5.2.The Radiation Field Approximation; title: 5.5.3.Radiation of a DC Signal?; title: 5.5.4.Field Lines; title: 5.6.Antennas as Radiators; title: Problems; title: Endnotes; title: 6.1.Motivation; title: 6.1.1.Models and Reality; title: 6.1.2.Is Radiation "Kinky"?; title: 6.1.3.The Maxwellian Perspective; title: 6.2.Localization and Flow of Electromagnetic Energy; title: 6.2.1.Localizing Electromagnetic Energy; title: 6.2.2.The Flow of Electromagnetic Energy; title: 6.2.3.Puzzles and Paradoxes of Electromagnetic Energy Flow; title: 6.2.4.Electromagnetic Velocity; title: 6.2.5.Causal Surfaces; title: 6.3.Electromagnetic Energy in Simple Problems; title: 6.3.1.Energy in Superposition; title: 6.3.2.Energy in Standing Waves; title: 6.4.Dipole Field Energy; title: 6.4.1.Exponentially Decaying Dipoles; title: 6.4.2.Damped Harmonic Dipoles; title: 6.4.3.Harmonic Dipoles; title: 6.4.4.Time-Domain Excitations; title: 6.5.Optimal Element Design; title: 6.5.1.Fatter Is Better; title: 6.5.2.Optimal Dipole Shape; title: 6.5.3.Optimal Loop Shape; title: 6.6.Fundamental Limits on Antenna Size; title: 6.6.1.The Chu-Harrington Limit; title: 6.6.2.The McLean Derivation of Small Antenna Q; title: 6.6.3.Is There a Q in UWB?; title: 6.6.4.Q-Based Antenna Limits in UWB Practice; title: 6.6.5.Energy-Flow-Based Limits to Antenna Performance; title: 6.7.Antennas as Energy Converters; title: Problems; title: Endnotes; title: 7.1.Frequency-Independent Antennas; title: 7.1.1.Basic Principles of Frequency-Independent Antennas; title: 7.1.2.Spiral Antennas; title: 7.1.3.Log-Periodic Antennas; title: 7.1.4.Fractal and Bent Wire Antennas; title: 7.2.Small-Element Electric Antennas; title: 7.2.1.Conical Antennas; title: 7.2.2.Planar Conical Antennas; title: 7.2.3.Bulbous Antennas; title: 7.2.4.Planar Bulbous Antennas; title: 7.2.5.Other Planar Monopole UWB Antennas; title: 7.2.6.Physical Behavior of Planar UWB Antennas; title: 7.2.7.General Principles of Small-Element Design; title: 7.2.8.Summary of Small-Element Electric Antennas; title: 7.3.Small-Element Magnetic Antennas; title: 7.3.1.Complementarity; title: 7.3.2.UWB Slot Antennas; title: 7.3.3.Large Current Radiator Antennas; title: 7.3.4.Monoloop Antennas; title: 7.3.5.Loop Antennas; title: 7.3.6.Summary of Small-Element Magnetic Antennas; title: 7.4.Electrically Small Antennas; title: 7.4.1.Antenna Scaling; title: 7.4.2.Dielectric Loading; title: 7.4.3.Conducting Enclosure Antennas; title: 7.4.4.Electric-Magnetic Antenna; title: 7.4.5.Summary of Electrically-Small antennas; title: 7.5.Directional Electrically Small Antennas; title: 7.5.1.The Beverage Loop; title: 7.5.2.Ewes, Flags, and K9AYs; title: 7.5.3.Multipole Synthesis; title: 7.5.4.Performance of Multipole Designs; title: 7.5.5.Experimental Results; title: 7.6.Horn Antennas; title: 7.6.1.Conical Plate Horn Antenna; title: 7.6.2.Termination of Horn Antennas; title: 7.6.3.Planar Horn Antennas; title: 7.6.4.Other Horn Antennas; title: 7.6.5.Summary of Horn Antennas; title: 7.7.Reflector Antennas; title: 7.7.1.Planar Reflector; title: 7.7.2.Corner Reflectors; title: 7.7.3.Parabolic Cylinder Reflectors; title: 7.7.4.Impulse Radiating Antennas; title: 7.7.5.Summary of Reflector Antennas; title: 7.8.Summary; title: Problems; title: Endnotes; title: 8.1.Antenna Spectral Control; title: 8.1.1.Antenna Scaling; title: 8.1.2.Antenna Filtering; title: 8.1.3.Antennas and Spectral Control; title: 8.2.Antenna Efficiency; title: 8.2.1.Efficiency Theory; title: 8.2.2.Efficiency Measurement; title: 8.3.Antenna Directivity; title: 8.3.1.Omni Versus Directional; title: 8.3.2.Amplitude Comparison Direction Finding; title: 8.3.3.Small-Aperture UWB Direction Finding; title: 8.3.4.Applications; title: 8.3.5.Conclusion; title: 8.4.UWB Antennas in Systems; title: 8.5.Summary and Conclusions; title: Problems; title: Endnotes.