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The influence of human head model wearing metal-frame spectacles to the changes of SAR and antenna gain: Simulation of frontal face exposure
(EMW Publishing, 2013)
The relationship between specific absorption rate (SAR) and antenna gain inside the head due to the metal-frame spectacles was investigated. The radio frequency (RF) energy source considered is the smartphone used in the ...
SCPS solution for heterogeneous networks for isolated areas: a novel design approach
(ICIC International, 2012)
This research presents an innovative system that has capability to prove the technical feasibility and advantages of a joint radio frequency (RF) and free space optic (FSO) system with a synchronized self-trace directional ...
Modeling of coaxial slot waveguides using analytical and numerical approaches: Revisited
(Hindawi Publishing Corporation, 2012)
Our reviews of analytical methods and numerical methods for coaxial slot waveguides are presented. The theories, background, and physical principles related to frequency-domain electromagnetic equations for coaxial waveguides ...
Smart receiver system of green hybrid antennas
(Wiley Periodicals, Inc., 2013-04)
A hybrid of multiformities receiver system is proposed in this article.The system is developed through a combination of reconfigurable beam-steering antenna, reconfigurable beam-shaping antenna, and data acquisition (DAQ) ...
Photovoltaic powered uninterruptible power supply using microcontroller PIC16F628-I/P
(Trans Tech Publications, 2014)
Uninterruptible power supply (UPS) sits between a power supply such as wall outlet and devices to prevent undesired feature that can occur within the power source such as outages, sags, surges and bad harmonics from the ...
Experimental determination of the performance of rice husk-carbon nanotube composites for absorbing microwave signals in the frequency range of 12.4-18 GHz
(EMW Publishing, 2013)
Composites of rice husks and carbon nanotubes (RHC-NTs) are an innovation in improving the absorption of microwave signals. Rice husks, which are an agricultural waste material, have been found to possess a significant ...
Improvement of absorption characteristics of solar cell above room temperature using quantum dot
(Engg Journals Publications, 2013-10)
This paper presents a theoretical study on the light absorption characteristics of solar cell. We have analyzed the temperature dependence of the absorption coefficient of light and the percentage of the incident light ...
Optical properties of ultraphosphate glasses containing mixed divalent zinc and magnesium ions
(Elsevier, 2013-01)
Ternary zinc magnesium ultraphosphate glasses corresponding to (ZnO)x(MgO)30−x(P2O5)70 were prepared by melt quenching technique in the range of 5 ⩽ x ⩽ 20 mol%. The optical absorption spectra of the glasses were measured ...
The influence of human head model wearing metal-frame spectacles to the changes of SAR and antenna gain: Simulation of frontal face exposure
(EMW Publishing, 2013)
The relationship between specific absorption rate (SAR) and antenna gain inside the head due to the metal-frame spectacles was investigated. The radio frequency (RF) energy source considered is the smartphone used in the ...
The performance of two antenna design shapes in ultra-wideband wireless applications
(Asian Research Publishing Network (ARPN), 2014)
The extensive requirements for small Ultra wideband (UWB) communication systems lead to design active and
small size antennas. In this research two rectangular microstrip antennas were designed to cover the UWB ...