نتایج جستجو برای: dipole dipole array
تعداد نتایج: 156024 فیلتر نتایج به سال:
We present a probe factor for a simple measurement device, which can be used to determine in-situ electrical resistivity in soils or other penetrable bodies. The probe is primarily sensitive to the material immediately surrounding it and therefore is ideal for determining localized conductivities. The geometry of the probe can be scaled to effectively adjust the region of interest. The calibrat...
The stability of dynamic dipole-dipole interactions in a quantum dot array is estimated, and a novel solid state quantum CCN (controlled controlled not) gate having a block structure of quantum dot array is proposed. Quantum mechanical coherence is expected to be maintained, and both the bit error and the phase error are reduced by the ensemble effects in the block. The overall process of quant...
We discuss the transition radiation of a neutrino induced by its toroid dipole moment (τ) when crossing the interface between two different media with different refraction indices. A neutrino of 1 MeV energy emits approximately 10−40 keV at τ = e √ 2GF /π 2. This effect depends very slightly on the neutrino mass and has a finite value in the massless limit.
Abstract-In this paper, a single neuron neural network beamformer is proposed. A perceptron model is designed to optimize the weights of a dipole array antenna to steer the beam to desired directions. The objective is to reduce the complexity by using a single neuron neural network and utilize it for adaptive beamforming in dipole array antennas. The optimized coefficients calculated from the s...
در این پروژه پس از بررسی انواع روشهای تراکینگ آنتن برای اینکه بتواند همواره با بیشترین قدرت دریافت و یا ارسال کند، از میان روشهای تراکینگ الکترونیکی و مکانیکی، تراکینگ به روش مکانیکی به کمک سیستم gps برگزیده شد. بدین صورت که ایستگاه زمینی به محض دریافت اطلاعات مربوط به مختصات سه بعدی ماهواره (طول و عرض جغرافیایی و ارتفاع از سطح زمین) پس از یک پردازش زاویه elevation و azimuth را برای آنتن تعیین ...
Abstract ⎯ In this paper a printed dipole antenna and three slot antennas are designed to operate at 10 GHz for use in radar systems. A parametric study of each antenna and comparison between their radiation properties including return loss, bandwidth, directivity, efficiency and radiation patterns for 6-element linear array are introduced. Slot antennas show wider bandwidth, less coupling and ...
In this paper, the interaction between an oscillating dipole moment and a Silver nanoparticle has been studied. Our calculations are based on Mie scattering theory and discrete dipole approximation(DDA) method.At first, the resonance frequency due to excitingthe localized surface plasmons has been obtained using Mie scattering theory and then by exciting a dipole moment in theclose proximity of...
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