Attenuation in Left-handed Waveguide Structure by Equivalent
... obtain by other analytical methods. This formula make the calculation and design of polarizers easy[6]. Rectangular waveguides are employed extensively in microwave receiver [7] since they are much easier to manipulate than circular waveguides and also offer significantly lower cross polarization co ...
... obtain by other analytical methods. This formula make the calculation and design of polarizers easy[6]. Rectangular waveguides are employed extensively in microwave receiver [7] since they are much easier to manipulate than circular waveguides and also offer significantly lower cross polarization co ...
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... at the scale of their unit cell. Indeed, local modifications of these media can be realized without altering the properties of the whole medium, notably its ability to support band gaps, resulting in the creation of cavities or waveguides [8]. Yet the lowest frequency exhibiting this property is typ ...
... at the scale of their unit cell. Indeed, local modifications of these media can be realized without altering the properties of the whole medium, notably its ability to support band gaps, resulting in the creation of cavities or waveguides [8]. Yet the lowest frequency exhibiting this property is typ ...
Material Analysis and Application for Radio Frequency
... Material Analysis and Application for Radio Frequency Electromagnetic Wave Shielding S.C. Yener∗ and O. Cerezci University, Engineering Faculty, Department of Electrical and Electronic Engineering, Sakarya, Turkey Our environment is full of radio frequency (RF) electromagnetic radiation due to rapid ...
... Material Analysis and Application for Radio Frequency Electromagnetic Wave Shielding S.C. Yener∗ and O. Cerezci University, Engineering Faculty, Department of Electrical and Electronic Engineering, Sakarya, Turkey Our environment is full of radio frequency (RF) electromagnetic radiation due to rapid ...
The study of magnetic circuits is important in the study of energy
... of the B-H curve (B=H=0) where there is no net magnetic flux given no applied field. As the magnetic field increases, at some point, all of the magnetic moments (current loops) within the material align themselves with the applied field and the magnetic flux density saturates (Bm). If the magnetic f ...
... of the B-H curve (B=H=0) where there is no net magnetic flux given no applied field. As the magnetic field increases, at some point, all of the magnetic moments (current loops) within the material align themselves with the applied field and the magnetic flux density saturates (Bm). If the magnetic f ...
Numerical modeling and theoretical characterization of experimental procedures of steerer magnets for particle accelerators Daniel Dan, Daniel Ioan, Simona Apostol, Ionel Chiriţă
... transversal induction, y = 0mm (right) One can observe a decrease of the excitation factor, for values higher than 200A which is justified by the saturation of the magnetic core (a nonlinear model being used). 4. Magnetic circuite approximative model For the approximative determination of the magnet ...
... transversal induction, y = 0mm (right) One can observe a decrease of the excitation factor, for values higher than 200A which is justified by the saturation of the magnetic core (a nonlinear model being used). 4. Magnetic circuite approximative model For the approximative determination of the magnet ...
Plasmonic metamaterials Review Kan Yao and Yongmin Liu*
... demonstrated extremely low-frequency plasmons [6], artificial magnetism [7], negative refractive index [8], extremely large refractive index [9], and strong chirality [10]. The broad spectrum of material properties offered by metamaterials also propels the rapid development of transformation optics, ...
... demonstrated extremely low-frequency plasmons [6], artificial magnetism [7], negative refractive index [8], extremely large refractive index [9], and strong chirality [10]. The broad spectrum of material properties offered by metamaterials also propels the rapid development of transformation optics, ...
An optical cloak made of dielectrics LETTERS *
... mapping1–4 . Metamaterials5,6 , with spatially tailored properties, have provided the necessary medium by enabling precise control over the flow of electromagnetic waves. Using metamaterials, the first microwave cloaking has been achieved7 but the realization of cloaking at optical frequencies, a ke ...
... mapping1–4 . Metamaterials5,6 , with spatially tailored properties, have provided the necessary medium by enabling precise control over the flow of electromagnetic waves. Using metamaterials, the first microwave cloaking has been achieved7 but the realization of cloaking at optical frequencies, a ke ...
Smart Materials, Precision Sensors/Actuators, Smart Structures, and
... Many electroactive functional materials have been used in small- and microscale transducers and precision mechatronic control systems for years. It was not until the mid-1980s that scientists started integrating electroactive materials with large-scale structures as in situ sensors and/or actuators, ...
... Many electroactive functional materials have been used in small- and microscale transducers and precision mechatronic control systems for years. It was not until the mid-1980s that scientists started integrating electroactive materials with large-scale structures as in situ sensors and/or actuators, ...
TN 9802: Understanding Permanent Magnets
... Modern permanent magnets play a vital role in a wide range of industrial, consumer and defense products. Efficient use of permanent magnets in these devices requires a basic understanding of magnetic theory. To achieve this end it is helpful to understand that all magnetic fields are the result of e ...
... Modern permanent magnets play a vital role in a wide range of industrial, consumer and defense products. Efficient use of permanent magnets in these devices requires a basic understanding of magnetic theory. To achieve this end it is helpful to understand that all magnetic fields are the result of e ...
Chapter 7. Magnetic Materials and Magnetic Circuit Analysis
... transformers, actuators and rotating machines, in which the magnetic fields vary frequently, whereas hard materials, or permanent magnets, are used to replace magnetization coils for generating static magnetic fields in devices such as electric motors and actuators. The B-H relationships and hystere ...
... transformers, actuators and rotating machines, in which the magnetic fields vary frequently, whereas hard materials, or permanent magnets, are used to replace magnetization coils for generating static magnetic fields in devices such as electric motors and actuators. The B-H relationships and hystere ...
Coupling Factor Calculation of Low Frequency RFID Systems by the
... presented method consists of only two static FEM problem solving which requires much less time compared to the ordinary method where all the distance steps of the readertransponder coil configuration are calculated. The strength of the method is the simplicity and speed. If the sensitivity parameter ...
... presented method consists of only two static FEM problem solving which requires much less time compared to the ordinary method where all the distance steps of the readertransponder coil configuration are calculated. The strength of the method is the simplicity and speed. If the sensitivity parameter ...
ELECTROMAGNETIC SYSTEMS AND DEVICES WITH NANO
... copper-ferrite, and nickel-ferrite. The liquids are deionized water or a mixture of organic solvents or synthetic oils. The sizes of nanoparticles can vary from 1 nm to 100 nm and determine the properties of ferrofluid. In addition there are two other key parameters used to ...
... copper-ferrite, and nickel-ferrite. The liquids are deionized water or a mixture of organic solvents or synthetic oils. The sizes of nanoparticles can vary from 1 nm to 100 nm and determine the properties of ferrofluid. In addition there are two other key parameters used to ...
Self-collimation and focusing effects in zero
... a new kind of photonic crystal based on metamaterial properties have recently attracted significant attention. Photonic band gap metamaterials (PBGM) combining positive and negative index materials have shown to support a disallowed frequency band of intriguing properties [2],[3]. An omnidirectional ...
... a new kind of photonic crystal based on metamaterial properties have recently attracted significant attention. Photonic band gap metamaterials (PBGM) combining positive and negative index materials have shown to support a disallowed frequency band of intriguing properties [2],[3]. An omnidirectional ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
... application of metamaterial to resolve the designing issues of patch antenna and its array. The brief overview of properties and types of metamaterials is presented and the technical literature presenting the patch antenna design and its performance enhancement using these materials is also discusse ...
... application of metamaterial to resolve the designing issues of patch antenna and its array. The brief overview of properties and types of metamaterials is presented and the technical literature presenting the patch antenna design and its performance enhancement using these materials is also discusse ...
Mystery of the double limit in homogenization of finitely or perfectly
... is clear from a physical point of view that dimensions smaller than several angstroms cannot be treated using macroscopic permittivity values). More amazing is the behavior of the highly, but finitely, conducting grating. At first, one observes a saturation value equal to the value of perfectly cond ...
... is clear from a physical point of view that dimensions smaller than several angstroms cannot be treated using macroscopic permittivity values). More amazing is the behavior of the highly, but finitely, conducting grating. At first, one observes a saturation value equal to the value of perfectly cond ...
Electromagnetic parameter retrieval from inhomogeneous
... We discuss the validity of standard retrieval methods that assign bulk electromagnetic properties, such as the electric permittivity and the magnetic permeability , from calculations of the scattering 共S兲 parameters for finite-thickness samples. S-parameter retrieval methods have recently become ...
... We discuss the validity of standard retrieval methods that assign bulk electromagnetic properties, such as the electric permittivity and the magnetic permeability , from calculations of the scattering 共S兲 parameters for finite-thickness samples. S-parameter retrieval methods have recently become ...
Terahertz spectrum analyzer based on a terahertz frequency comb
... Frequency is a fundamental physical quantity of electromagnetic wave. Therefore, various techniques have been established to measure the frequency of electromagnetic waves. Interferometry is often used in the optical region. For precise measurements, the number of interference fringes of a measured ...
... Frequency is a fundamental physical quantity of electromagnetic wave. Therefore, various techniques have been established to measure the frequency of electromagnetic waves. Interferometry is often used in the optical region. For precise measurements, the number of interference fringes of a measured ...
Chapter 4. Magnetostatics
... counteracted by the deranging effects of thermal agitation. Unlike diamagnetism, which is essentially independent of temperature, the paramagnetic effect is temperature dependent, being stronger at lower temperatures where there is less thermal collision. While the atoms of many elements have net ma ...
... counteracted by the deranging effects of thermal agitation. Unlike diamagnetism, which is essentially independent of temperature, the paramagnetic effect is temperature dependent, being stronger at lower temperatures where there is less thermal collision. While the atoms of many elements have net ma ...
High-Temperature Operation of Terahertz Quantum Cascade Laser
... rials or photoconductive switches), has a demonstrated potential in some of these areas [1], [2]. However, further development of THz systems will require compact semiconductor-based sources: there currently exist no room temperature, high-power, widely tunable THz sources that are suitable for prod ...
... rials or photoconductive switches), has a demonstrated potential in some of these areas [1], [2]. However, further development of THz systems will require compact semiconductor-based sources: there currently exist no room temperature, high-power, widely tunable THz sources that are suitable for prod ...
New Materials and New Concepts for Controlling Light and Waves
... *Email of Presenting Author: [email protected] ...
... *Email of Presenting Author: [email protected] ...
3.8 Summary: Dielectrics
... The dielectric function describing relaxation has a typical frequency dependence in its real and imaginary part ⇒ The green curve would be about right for crystals. The complete frequency dependence of the dielectric behavior of a material, i.e. its dielectric function, contains all mechanisms "oper ...
... The dielectric function describing relaxation has a typical frequency dependence in its real and imaginary part ⇒ The green curve would be about right for crystals. The complete frequency dependence of the dielectric behavior of a material, i.e. its dielectric function, contains all mechanisms "oper ...
1 - Foundation for Research and Technology
... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
... sample with diameters around 20-30 µm enable extremely strong pumping conditions, for which quantum well (QW) gain is expected. Fortunately, under these intense, essentially continuouswave, pumping conditions, no sample deterioration has been observed. The probe pulses are derived from an optical pa ...
pdf file
... where ωT is the THz ferquency and n g (ωopt ) is the group refractive index at optical frquencies. In Fig. 1(a) is shown the group refractive index at 800 nm by a red horizontal line. The phase matching condition is satisfied at THz wave frequency of 2.1 THz. For the simulations under perfect phase ...
... where ωT is the THz ferquency and n g (ωopt ) is the group refractive index at optical frquencies. In Fig. 1(a) is shown the group refractive index at 800 nm by a red horizontal line. The phase matching condition is satisfied at THz wave frequency of 2.1 THz. For the simulations under perfect phase ...
Guiding light with conformal transformations
... coordinate transformations of free space invariably returned waves undisturbed as they existed the altered region. Later works demonstrated that the TO methodology could be applied to create devices that could steer or focus electromagnetic waves [3]. This class of transformations are termed finite- ...
... coordinate transformations of free space invariably returned waves undisturbed as they existed the altered region. Later works demonstrated that the TO methodology could be applied to create devices that could steer or focus electromagnetic waves [3]. This class of transformations are termed finite- ...