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A simple technique for improving the anechoic performance of a pyramidal absorber
(EMW Publishing, 2013)
In this paper, we propose a very simple technique that offers an extra degree of freedom to optimize the design of a tire dust-based absorber with reduced height. Cladding is a technique that is used to enhance the surface ...
A dual-band array antenna using dome-shaped radiating patches
(Wiley Periodicals, 2013-11)
A novel design of a dual-band array antenna for Wireless Local Area Network and Worldwide Interoperability for Microwave Access applications is presented in this article. The antenna operates at 3.5 dBi (the lower band) ...
Optimal coordinated design of multiple damping controllers based on PSS and UPFC device to improve dynamic stability in the power system
(Hindawi Publishing Corporation, 2013)
Unified Power Flow Controller (UPFC) device is applied to control power flow in transmission lines. Supplementary damping controller can be installed on any control channel of the UPFC inputs to implement the task of Power ...
UPFC device application on power system oscillations to improve the damping performance
(Trans Tech Publications, 2013)
UPFC is considered as an important modern device in the flexible ac transmission systems family that provides the controllability and flexibility for transmission lines. It is also capable of enhancing the stability of the ...
Damping improvement of power system oscillations by using optimal coordinated design between PSS and SVC-based stabilizer
(Trans Tech Publications, 2013)
The large expansion of electrical power systems usually results in problem of low frequency oscillations. Therefore, the conventional Power System Stabilizers (PSSs) used to solve this problem cannot provide an adequate ...
Comparative study between measurement and predictions using geometrical optics and uniform theory of diffraction for case of non-line-of-sight (NLOS) in indoor environment
(Springer Science+Business Media New York, 2013-08)
This paper describes the investigation and comparison of the accuracy of a deterministic model for a WLAN system in the indoor environment. The measurement system consisted of a spectrum analyzer and a log-periodic antenna. ...
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 ...