Journal ArticleDOI
Two-dimensional microwave band-gap structures of different dielectric materials
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TLDR
In this paper, the use of low dielectric constant materials to form two-dimensional microwave band-gap structures for achieving high gap-to-midgap ratio was reported.Abstract:
We report the use of low dielectric constant materials to form two-dimensional microwave band-gap structures for achieving high gap-to-midgap ratio. The variable parameters chosen are the lattice spacing and the geometric structure. The selected geometries are square and triangular and the materials chosen are PTFE (e = 2.1), PVC (e = 2.38) and glass (e = 5.5). Using the plane-wave expansion method, proper lattice spacing is selected for each structure and material. The observed experimental results are analyzed with the help of the theoretical predictionread more
Citations
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Experimental and Numerical Study of Sensitivity Improvement in Near-Field Probes Using Single-Negative Media
TL;DR: In this article, an experimental verification of the sensitivity improvement of evanescent-field probes using single-negative (SNG) metamaterials is presented, and the deviation in the phase of reflection coefficient due to the target is measured.
Journal ArticleDOI
Linearization of power amplifiers by second harmonics and fourth-order nonlinear signals
TL;DR: In this article, a single-stage power amplifier and two-way Doherty amplifier are linearized by the technique that uses second harmonics and fourth-order nonlinear signals.
Patent
Sandwich vehicle structure having integrated electromagnetic radiation pathways
Jason P. Bommer,Travis G. Olson +1 more
TL;DR: In this paper, the authors propose a sandwich vehicle structure that allows for the confined propagation of electromagnetic radiation within the sandwich vehicle, where the core is composed of a core medium and a plurality of spaced apart core members embedded in the core medium.
Journal ArticleDOI
Nonlinear properties of a graded-index photonic heterostructure
TL;DR: In this article, the optical properties of a one-dimensional (1D) photonic heterostructure with graded-index nonlinear materials are analyzed theoretically and the influence of the gradation profile of the nonlinear layers on the linear and nonlinear responses of the structure is analyzed.
Dissertation
Sensitivity Enhancement of Near Field Probes Using Negative Materials
TL;DR: In this paper, the effect of placing DNG and SNG layers between the near field probes and the targets is investigated theoretically, and it is shown using quantitative measures that the sensitivity can be increased using double negative and single negative (SNG) materials for a target in vacuum and for a buried target.
References
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Journal ArticleDOI
Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
Journal ArticleDOI
Photonic band structure: The face-centered-cubic case.
TL;DR: This work has identified one particular dielectric ``crystal'' which actually has a ``photonic band gap'' and requires a refractive index contrast greater than 3 to 1, which happens to be readily obtainable in semiconductor materials.
Journal ArticleDOI
Photonic band structure of two-dimensional systems: The triangular lattice
Martin Plihal,A. A. Maradudin +1 more
TL;DR: By the use of a position-dependent dielectric constant and the plane-wave method, the photonic band structure for electromagnetic waves in a structure consisting of a periodic array of parallel dielectrics rods of circular cross section, whose intersections with a perpendicular plane form a triangular lattice is calculated.
Journal ArticleDOI
Tight-binding description of the coupled defect modes in three-dimensional photonic crystals
TL;DR: The eigenmode splitting due to coupling of the evanescent defect modes in three-dimensional photonic crystals was well explained with a theory based on the classical wave analog of the tight-binding formalism in solid state physics.
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