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Showing 1 to 10 of 10 for “"Electromagnetic band gap"”.
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Wideband Electromagnetic Band Gap (EBG) Structures, Analysis and Applications to Antennas
In broadband antenna applications, the antenna's cavity is usually loaded with absorbers to eliminate the backward radiation, but in doing so the radiation efficiency of the antenna is decreased. To enhance the radiation efficiency of the antennas EBG structures are used, but they operate over a …
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Design of electromagnetic band-gap structures using planar technology for Rfid and microwave applications
… se aborda el desarrollo de nuevas estructuras Electromagnetic Band-Gap (EBG) 1 Artificial Magnetic Conductors (AMC), para sistemas de comunicación, que proporcionan una mejor funcionalidad y rendimiento, tanto solas como en combinación con antenas. El gran potencial de desarrollo de estas …
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Optimization of microwave devices
… developed to connect the optimization with an electromagnetic analysis tool. In the first method the algorithm has been connected to a numerical technique for the evaluation of the device performance (FDFD). The second technique consists on the integration of the algorithm with a 3D Simulation …
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Analysis of periodic structures using finite-difference time-domain method
Periodic structures are of great importance in electromagnetics these days due to their wide range of applications such as frequency selective surfaces (FSS), electromagnetic band gap, periodic absorbers, metamaterials and many others. The aim of this work is to develop several algorithms to …
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A Numerical Parametric Study on the Performance of a Low Profile dipole Planar Inverted Cone Antenna Placed over an Electromagnetic Bandgap Structure
Electromagnetic Band-gap (EBG) materials are a type of metamaterial with attractive properties not found in nature. EBG materials act as a high impedance surface over a specific frequency range, so they are a good candidate for replacing the conductive ground plane found in most low profile …
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Design, modelling and implementation of antennas using electromagnetic bandgap material and defected ground planes
… and implement several antenna geometries using electromagnetic band gap (EBG) material and a defected ground plane. Several antenna applications are addressed with the aim of improving performance, particularly the mutual coupling between the elements. The EBG structures have the unique …
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Homogenization of Structured Metasurfaces and Uniaxial Wire Medium Metamaterials for Microwave Applications
In recent years, the study of electromagnetic wave interaction with artificial media has been the subject of intense research interest due to their extraordinary properties such as negative refraction, partial focusing, enhanced transmission, and spatial filtering, among others. Artificial media …
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Design of power delivery networks for noise suppression and isolation using power transmission lines
In conventional design of power delivery networks (PDNs), the PDN impedance is required to be less than the target impedance over the frequency range of interest to minimize the IR drop and to suppress the inductive noise during data transitions. As a result, most PDNs in high-speed systems consist …
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RELATIVISTIC BACKWARD WAVE OSCILLATOR WITH A GAUSSIAN RADIATION PATTERN AND RELATED TECHNOLOGIES
… an HPM Gaussian wave beam. A BWO generates an electromagnetic wave with negative group velocity where the wave is traveling in the direction opposite to the electron beam. Thus, to extract the microwave signal axially, a cavity resonator reflector or cutoff waveguide section are widely used to …
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Single Layered Periodic Structure Loaded Textile Patch Antennas
… introduction to periodic structures, namely Electromagnetic Band Gap (EBG) structures.</p> <p>The third chapter covers wearable antennas, with and without periodic structures, and their applications. A review of surface waves and wave modes is given. This review produces a picture of how this …