Home Page Icon
Home Page
Table of Contents for
Cover
Close
Cover
by Jean-Marc Laheurte
Compact Antennas for Wireless Communications and Terminals: Theory and Design
Cover
Dedication
Title Page
Copyright
Introduction
Chapter 1. General Information About Printed Antennas
1.1. Physical characteristics
1.2. Properties, limitations, and applications
1.3. Printed rectangular antenna viewed as a wide microstrip line
1.4. Manufacturing processes
1.5. Microwave substrates
Chapter 2. Transmission Line Model
2.1. Introduction
2.2. Equivalent circuit
2.2.1. Effective permittivity
2.2.2. Equivalent line extension
2.2.3. End of line equivalent circuit
2.2.4. Process for design of a rectangular antenna
2.2.5. Example
2.3. Input impedance
Chapter 3. Cavity Model
3.1. Introduction
3.2. Formulation of the electromagnetic problem
3.3. Calculation of expressions for fields and currents of a rectangular patch
3.4. Expressions for principal modes
3.5. Cartography of modal currents and associated radiation patterns
Chapter 4. Radiation of a Printed Antenna
4.1. Introduction
4.2. Modelization using two equivalent radiating slots
4.3. Calculation of the field radiated by a horizontal radiating slot
4.4. Calculation of the field radiated by the rectangular patch
4.5. Determination of the radiation pattern in the principal planes
4.6. Influence of height
4.7. Influence of the ground plane
4.8. Polarization
4.9. Directivity
4.10. Influence of the substrate on resonant frequency: parametric study based on antenna RCS
Chapter 5. Electrical Equivalent Circuit of a Printed Antenna
5.1. Energy considerations
5.2. Equivalent circuit
5.3. Determination of WE, WM, and B for a rectangular patch
5.4. Modeling using a tank circuit
5.5. Quality factor of an antenna
5.6. Calculation of radiation quality factor
5.7. Calculation of efficiency
5.7.1. Losses in conductive walls
5.7.2. Losses in the dielectric
5.7.3. Radiated power
5.8. Influence of surface waves on bandwidth and efficiency
Chapter 6. Feeding Circuits for Microstrip Antennas
6.1. Introduction
6.2. Direct coupling by coaxial probe
6.3. Excitation by proximity coupling
6.4. Excitation by slot coupling
Chapter 7. Circularly Polarized Antennas
7.1. Principles of circular polarization
7.1.1. Elliptical and circular linear polarization
7.1.2. Right‐ or left‐hand circular polarization
7.1.3. Axial and cross‐polarization ratios
7.1.4. Measurement of circular polarization
7.1.4.1. Measurement of the whole ellipse
7.1.4.2. Three-point measurement
7.2. Parasitic radiation — degradation of circular polarization
7.3. Patch fed by single or dual excitation
7.3.1. Single excitation
7.3.2. Dual excitation
7.4. Sequential array
7.4.1. Principle of sequential rotation: initial analysis
7.4.2. Sequential rotation applied to a radiating element fed by multiple feeds
7.5. Spiral and quadrifilar helix antennas
7.5.1. Spiral antennas
7.5.1.1. Frequency independent antennas
7.5.1.2. Principle of operation in order to obtain circular polarization
7.5.2. Quadrifilar helix antennas
7.5.2.1. Monofilar helix antenna
7.5.2.1.1. Sizing — normal and axial operating modes
7.5.2.1.2. Study of the normal mode of the monofilar helix
7.5.2.2. Quadrifilar helix antenna
7.6. Conclusion
Chapter 8. Wideband Antennas
8.1. Multiresonant antennas
8.1.1. Principle
8.1.2. Widening bandwidth through resonance coupling
8.2. Traveling wave antennas
8.2.1. Tapered slot antennas
8.3. Frequency independent antennas
8.3.1. Introduction
8.3.2. Equiangular antennas
8.3.3. Log‐periodic antennas
8.3.4. Sinuous antennas
8.4. Ultra‐wideband antennas
8.4.1. Biconical and Bow‐Tie antennas
8.4.2. Planar monopoles
8.4.2.1. Planar monopoles mounted over infinite ground plane
8.4.2.2. Reduced ground plane planar monopoles
8.5. Conclusion
Chapter 9. Miniature Antennas
9.1. Introduction
9.2. Which types of antennas should be used for integration?
9.2.1. Non‐resonant antennas
9.2.2. Resonant antennas
9.3. Integration limits in a finite volume
9.4. Resonant antennas in fundamental mode
9.4.1. General considerations
9.4.2. Wire antennas
9.4.2.1. Half-wave dipole
9.4.2.2. Monopole antenna
9.4.2.3. Resonant loop
9.4.3. Planar antennas
9.4.3.1. Slots
9.4.3.2. Patches
9.4.4. Comparison
9.4.5. 3D antennas
9.5. Bulk reduction techniques
9.5.1. Use of dielectrics with strong permittivity
9.5.2. Modification of wave path
9.5.2.1. Inverted L antenna
9.5.2.2. Helical antenna
9.5.2.3. Conformed patch antennas
9.5.2.4. C-patch antenna
9.5.3. Utilization of inductive, capacitive, and short‐circuit effects
9.5.3.1. Loaded monopole
9.5.3.2. Quarter-wave patch
9.5.3.3. Inverted F antenna
9.5.3.4. PIFA
9.5.4. Control over radiation
9.5.4.1. Folded quarter-wave resonator
9.5.4.2. Wire-patch
9.5.4.3. Coplanar wire-patch
9.6. Multiresonant antennas
9.7. Synthesis and discussion
Chapter 10. Reconfigurable Antennas
10.1. Introduction
10.2. Basic topologies and constraints
10.3. Switched components: available technologies
10.4. Frequency reconfigurable antennas (FRAs)
10.4.1. Introduction
10.4.2. Examples of radiating slot‐based FRA
10.4.3. Examples of patch‐ or PIFA‐based FRA integrating switchable slots
10.4.4. Examples of FRA using switched short circuits
10.4.5. FRA utilizing a loaded stub
10.5. Introduction to RAs in terms of polarization and radiation pattern
10.6. Polarized reconfigurable antennas (PRAs)
10.7. Radiation pattern reconfigurable antennas (RPRAs)
10.7.1. RPRA with rotational symmetry and switched parasitics
10.7.2. RPRA with parasitic elements loaded using switched reactance
10.7.2.1. Field radiated by an array of coupled antennas — active radiation pattern
10.7.2.2. Example of a central element fed and coupled to two non-fed and loaded symmetric parasitic elements
10.7.2.3. Optimization procedures
10.7.3. Unit cell of reflective array based on a patch of slots [CAD 05]
Chapter 11. Introduction to Antenna Diversity
11.1. Benefits of antenna diversity
11.1.1. Effects of multipath propagation
11.1.2. Principles of antenna diversity
11.1.3. Non‐ideal antenna diversity
11.1.3.1. Unbalanced signals
11.1.3.2. Correlated signals
11.2. Performance of multiantenna systems
11.2.1. Antenna balance
11.2.2. Antenna independence
11.2.2.1. Utilization of far-field radiation patterns
11.2.2.2. Utilization of S-parameters
11.3. Multiantenna systems
11.3.1. Space diversity
11.3.2. Compact multiantenna system
11.4. Conclusion and looking toward MIMO
Bibliography
List of Authors
Index
Search in book...
Toggle Font Controls
Playlists
Add To
Create new playlist
Name your new playlist
Playlist description (optional)
Cancel
Create playlist
Sign In
Email address
Password
Forgot Password?
Create account
Login
or
Continue with Facebook
Continue with Google
Sign Up
Full Name
Email address
Confirm Email Address
Password
Login
Create account
or
Continue with Facebook
Continue with Google
Next
Next Chapter
Compact Antennas for Wireless Communications and Terminals
Add Highlight
No Comment
..................Content has been hidden....................
You can't read the all page of ebook, please click
here
login for view all page.
Day Mode
Cloud Mode
Night Mode
Reset