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Now showing items 11-20 of 44
Capacitive micromachined ultrasonic tranducers: Technology and application
(Elsevier B.V., 2012-03)
Capacitive micromachined ultrasonic tranducers (cMUTs) have recently emerged as an alternative to conventional piezoelectric transducers. They offer many advantages in terms of bandwidth, fabrication of layer arrays, ...
A reconfigurable ultra wide band (UWB) compact tree-design antenna system
(The Electromagnetics Academy, 2012-03)
A novel compact tree-design antenna (NCTA) with the ability of reconfigurable ultra-wideband (UWB) of 3.1 GHz to 10.6 GHz to five multi-narrowband applications is proposed. This antenna has a novel radiating element design ...
Design of UHF harmonic butterworth low pass filter for portable 2 ways-radio
(Engg Journals Publications, 2013)
This paper presents the design of a compact Butterworth low pass filter designed operating at frequency range of 300-400MHz with input and output impedance of 50 ohm have been designed, simulated and fabricated. This filter ...
A comparative study of confined carrier concentration of laser using quantum well and quantum dot in active layer
(Trans Tech Publications, 2013)
This paper presents a comparative analysis of the characteristics of confined carrier concentration in the gain medium as well as the carrier concentration at the threshold. We have studied extensively these phenomena by ...
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 ...
Impedance modeling for a unit cell of the square loop frequency selective surface at 2.4 GHz
(Institute of Electrical and Electronics Engineers (IEEE), 2013-09-04)
This paper presented an impedance modeling of the Equivalent Circuit (EC) for a unit cell of the square loop Frequency Selective Surface (FSS) structure. The unit cell of the square loop FSS is designed and simulated using ...
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) ...
A survey on human behavior towards energy efficiency for office worker in Malaysia
(Institute of Physics Publishing, 2014)
Green environment has become an important topic around the world. This campaign can be realized if everybody understands and shares similar objectives on managing energy in an efficient way. This paper will present and ...