نتایج جستجو برای: conventional dielectric wave guide model
تعداد نتایج: 2604486 فیلتر نتایج به سال:
In this report. wave propagation inside a perfectly conducting room with two homogeneous dielectric walls has been studied. The thicknesses and losses of the dielectric walls are arbitrary. therefore it is possible to model wave phenomena inside various indoor environments. Green's function technique is used to calculate the electric fields excited by point sources and half wave dipole transmit...
The commonly used optical sensor based on surface plasmon-polariton wave phenomenon can sense just one chemical, because only one SPP wave can be guided by the interface of a metal and a dielectric material contained in the sensor. Multiple analytes could be detected and/or the sensing reliability for a single analyte could be enhanced, if multiple SPP-wave modes could be excited on a single me...
Based on the polarimetric scattering model of second-order small-slope approximation (SSA-II) with tapered wave incidence under linear and circular polarization, monostatic and bistatic scattering from two-dimensional dielectric rough sea surface is investigated. The emphasis of the present study is on the polarization signature of the scattered wave under circularly polarized wave incidence, w...
We evaluated the dielectric permittivity and impedance characteristics of high dielectric constant polymer composite films. Such materials are being investigated by the electronic industry in response to the growing need for efficient integrated powerground de-coupling capacitance in microwave circuits and fast switching devices. In order to extend the dielectric measurements to the microwave r...
The physical origins of the transverse optical binding force and torque beyond Rayleigh approximation have not been clearly expressed to date. Here, we present analytical expressions for a dual dipolar dielectric dimer illuminated by plane wave propagating perpendicularly axis. Using this model, explore roles hybridized electric dipolar, magnetic electric-magnetic coupling interactions in total...
The term "artificial dielectric" is conveniently applied to any arrangement of conducting obstacles which affects the propagation of electromagnetic waves in a way similar to a solid dielectric. The essential property of a solid dielectric from the point of view of propagation is that the phase velocity within the dielectric is different from the free-space value. A quantitative indication of t...
We present an analytical model based on scalar-wave approximation to study the stop bands of facecentered-cubic photonic crystals with dielectric spheres at lattice sites. An analytical expression is obtained for the normalized stop band widths along the @111# and @100# directions as a function of volume fraction and relative dielectric contrast. These calculations enable us to map out the diel...
Recently, there has been increasing interest in object imaging and detection behind obscuring layers because of applications in detection of improvised explosive devices (IEDs) and suspicious materials. Millimeter (MMW) and terahertz waves show promise in detecting and imaging objects through clothing or packaging materials. In this paper, we discuss an electromagnetic model based on a multi-la...
abstract: one of the most visited & important spaces in different countries by tourist are urban areas. the old tehran which major part is located in district 12 is historical showcase of the capital, but, its hiidden cultural attraction is not used as it should be. this thesis occasionally engage in studying the efficacy of correct installation of travel guide boards in welfare & easily acc...
1. Introduction Leaky-wave antennas based on an open-waveguide structure without partly physical cut become a candidate of millimeter-wave antennas because asymmetry of the structure can easily produce a radiation along its length due to a leaky mode. One of these open waveguides for antenna purposes is the stub-loaded ridge-rectangular waveguide, which consists of a ridge-rectangular waveguide...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید