Dielectric Resonator Antennas.
This book focuses on the understanding of the Cylindrical Dielectric Resonator Antennas (CDRA). The book introduces the fundamentals of DRA, CDRA, identifying the modes in a CDRA, excitation techniques and recent advancements pertaining to the research of the CDRAs. The latest trends in the field ar...
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| Autres auteurs: | |
| Format: | Licensed eBooks |
| Langue: | anglais |
| Publié: |
Norwood :
Artech House,
2021.
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| Accès en ligne: | https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&AN=3158435 |
Table des matières:
- Dielectric Resonator Antennas
- Contents
- Acknowledgments
- 1 Introduction to Dielectric Resonator Antennas
- 1.1 Genesis of Dielectric Materials as Radiators
- 1.2 RDRAs and Their Modes
- 1.3 CDRA and Its Modes
- 1.4 HDRA and Its Modes
- 1.5 Equilateral Triangular DRA and Its Modes
- 1.6 Conclusion
- References
- 2 DRA Bandwidth Enhancement Techniques
- 2.1 Various Feeding Methods
- 2.1.1 Coaxial Probe Feed
- 2.1.2 Microstrip Feeding
- 2.1.3 Aperture or Slot Feeding
- 2.2 Bandwidth Enhanced by Stacking of Various Permittivity Layers
- 2.3 Metallic Loading
- 2.4 Compact and Low-Profile Geometry
- 2.5 Fractal- and Reform-Shaped Geometry
- 2.6 Conclusion
- References
- 3 DRA CP Techniques
- 3.1 Circular Polarization by the Single-Feed Technique
- 3.2 CP by Multiple-Feeding Techniques
- 3.3 CP by Geometry Modification Techniques
- 3.4 CP by the Array Configuration Technique
- 3.5 CP by Switchable Feeding Techniques
- 3.6 Conclusion
- References
- 4 DRA Gain-Enhancement Techniques
- 4.1 Gain Enhancement by Loading a Metamaterial or Frequency-Selective Surface on a DRA
- 4.2 Gain Enhanced by Metal Integration of the DRA
- 4.3 Gain Enhanced by Higher-Order Modes
- 4.4 Enhancing Gain with a Dielectric Resonator Array System
- 4.5 Enhancing Gain by Stacking Various Materials
- 4.6 Conclusion
- References
- 5 Multiple-Input and Multiple-Output DRAs and Diversity Applications
- 5.1 MIMO Antenna Characteristics and Attributes
- 5.1.1 Reflection Coefficient (R)
- 5.1.2 Transmission Coefficient (t)
- 5.1.3 Envelope Correlation Coefficient
- 5.1.4 Channel Capacity Loss
- 5.1.5 Mean Effective Gain
- 5.1.6 Total Active-Reflection Coefficient
- 5.2 Single-DRA Element with Dual- or Multiple-Feeding Techniques for MIMO Applications
- 5.3 Dual-DRA Elements with Dual- or Multiple-Feeding Techniques for MIMO Applications.
- 5.4 Multiple DRA Elements with Multiple Feeds for MIMO Applications
- 5.5 Conclusion
- References
- 6 Fabrication, Experimental Setup, Measurement, and Practical Considerations
- 6.1 Dielectric Material and Its Selection
- 6.2 Limitations in Practical DRA Considerations
- 6.3 Fabrication Methods and Machines
- 6.4 Various Measurements of the DRA
- 6.4.1 Measurement of the S-Parameter
- 6.4.2 Far-Field Measurement Setup
- 6.4.3 Gain and Antenna Radiation Efficiency Measurements
- 6.4.4 CP Measurements
- 6.5 Conclusion
- References
- About the Authors
- Index.