Efficient Electrically Small Prolate Spheroidal Antennas Coated with a Shell of Double-Negative Metamaterials
Ming Da Huang,Soon Yim Tan +1 more
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TLDR
In this paper, an efficient, electrically small prolate spheroidal antenna coated with confocal double-negative (DNG) metamaterials (MTMs) shell is presented.Abstract:
An efficient, electrically small prolate spheroidal antenna coated with confocal double-negative (DNG) metamaterials (MTMs) shell is presented. The radiation power of this antenna-DNG shell system excited by a delta voltage across an infinitesimally narrow gap around the antenna center is obtained using the method of separation of the spheroidal scalar wave functions. Our results show that this electrically small dipole-DNG shell system has very high radiation efficiency comparing with the normal electrically small antenna due to the inductive effect of the MTMs shell that cancel with the capacitive effect of the electrically small antenna. It is found that the spheroidal shell can achieve more compact structure and higher radiated power ratio than the corresponding spherical shell. This dipole-DNG shell systems with different sizes are analyzed and discussed.read more
Citations
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SAR Reduction in Human Head from Mobile Phone Radiation using Single Negative Metamaterials
TL;DR: In this article, the authors used single negative metamaterials to reduce the electromagnetic interaction between the mobile phone and human head to reduce specific absorption rate (SAR) in the head.
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Application of Micro-Genetic Algorithm to the Design of Matched High Gain Patch Antenna with Zero-Refractive-Index Metamaterial Lens
TL;DR: In this article, the authors presented a method for the computer aided design of high gain patch antenna with zero-refractive index (ZRI) metamaterials using Micro-Genetic Algorithm (MGA) and finite-difference time-divergence.
Journal ArticleDOI
Analyzing the Multilayer Optical Planar Waveguides with Double-Negative Metamaterial
TL;DR: In this article, a general method for analyzing the multilayer optical planar waveguides with photonic metamaterial is presented, and the propagation characteristics of TE waves guided by the fllm with both the permittivity and permeability less than zero are investigated theoretically.
Journal ArticleDOI
Electrically small antenna inspired by spired split ring resonator
TL;DR: In this article, a simple metamaterial resonator structure based efficiency electrically small semi-circular loop antenna (ESSCLA) is proposed, which can be fabricated on one dielectric substrate and match conjugate to a 50Ohm coaxial transmission line source without additional matching network.
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FILTERING LENS STRUCTURE BASED ON SRRs IN THE LOW THz BAND
B. Andres-Garcia,Luis Enrique Garcia Munoz,Vicente Gonzalez-Posadas,F. J. Herraiz-MartÃnez,Daniel Segovia-Vargas +4 more
TL;DR: In this paper, a flltering lens for conical horns based on metamaterials is presented, where a printed layer of Split Ring Resonators (SRRs) on a substrate is used as a superstrate on the horn aperture.
References
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Book
Antenna Theory: Analysis and Design
TL;DR: The most up-to-date resource available on antenna theory and design as mentioned in this paper provides an extended coverage of ABET design procedures and equations making meeting ABET requirements easy and preparing readers for authentic situations in industry.
Journal ArticleDOI
Physical Limitations of Omni-Directional Antennas
TL;DR: In this paper, the physical limitations of omni-directional antennas are considered and the potentiality of a broad band width of an antenna with the maximum dimension of 2a has been shown.
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A re-examination of the fundamental limits on the radiation Q of electrically small antennas
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