Browsing Azremi Abdullah Al Hadi, Assoc. Prof. Ts. Dr. by Title
Now showing items 21-40 of 44
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Microwave wedge absorber design using rice husk - An evaluation on placement variation
(Institute of Electrical and Electronics Engineers (IEEE), 2010-04-12)Placement variation is one example of parameters that critically affects the performance of RF absorbers. In this work, four designed variation patterns - W, X, Y, and Z were discussed to compare the reflectivity (Sll) ... -
A MIMO LMS adaptive equalization approach in simulated radar emission
(Institute of Electrical and Electronics Engineering (IEEE), 2006)MIMO technology has attracted a lot of attention in the area of wireless communications such as radar applications, in term of increasing the spectral efficiency. This research paper will present the model of Simulated ... -
Multi-antenna mobile terminal diversity performance in proximity to human hands under different propagation environment conditions
(The Institution of Engineering and Technology, 2011-10-27)The effective diversity gain (EDG) of a four-element planar inverted-F antenna array, which operates at 3500MHz in the proximity to one hand in data-mode grip and two hands in browsing-mode grip, is predicted using a ... -
Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application
(EMW Publishing, 2009)The design of a novel Fractal planar inverted F antenna (F-PIFA) based on the self affinity property is presented in this paper. The procedure for designing a Fractal Planar Inverted F Antenna is explained and three different ... -
Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application
(EMW Publishing, 2009)The design of a novel Fractal planar inverted F antenna (F-PIFA) based on the self affinity property is presented in this paper. The procedure for designing a Fractal Planar Inverted F Antenna is explained and three different ... -
A novel 2.45GHz switchable beam textile antenna (SBTA) for outdoor wireless body area network (WBAN) applications
(EMW Publishing, 2013)A novel switchable beam textile antenna (SBTA) for wireless body area network (WBAN) applications is proposed. The SBTA is centrally-fed by a coaxial probe and the power distributed over four circular radiating elements. ... -
On diversity performance of two-element coupling element based antenna structure for mobile terminal
(Institute of Electrical and Electronics Engineers (IEEE), 2010-04-12)In wireless communication systems, multipath interference has a significant impact on system design and performance. Fast fading is caused by the coherent summation of one or more echoes from many reflection points reaching ... -
Parametric performance simulation of a proximity-coupled fed microstrip dipole array
(Institute of Electrical and Electronics Engineering (IEEE), 2008-05-19)This work reports on the performance simulation of two element units of microstrip dipole array antennas for WLAN application. Simulation is done using two different simulation techniques, the circuit model (CM) derived ... -
Parametric studies of the pyramidal microwave absorber using rice husk
(Institute of Electrical and Electronics Engineers (IEEE), 2010)Agriculture waste has potential to be used as an alternative material for the microwave absorber used in the anechoic chamber. Compared to the current materials used, such as polystyrene and polyurethane, agricultural waste ... -
A parametric study of broadband planar inverted F antenna (PIFA) for WLAN application
(Institute of Electrical and Electronics Engineering (IEEE), 2008)A novel of comprehensive study and useful information for the design of broadband Planar Inverted F antenna (PIFA) is proposed. The antenna including the ground plane has a total dimension 6mm × 70mm × 30mm has been optimized ... -
Performance analysis and prediction using circuit model in a microstrip patch array
(Institute of Electrical and Electronics Engineering (IEEE), 2007)This work is an effort in investigating and modeling an accurate Circuit Model derived from the Transmission Line Method (CM/TLM) by simulating a rectangular microstrip patch array using two different simulation techniques, ... -
Performance comparison of serial and corporate feeding networks in a rectangular Microstrip patch antenna array
(Kolej Universiti Teknologi Tun Hussein Onn, 2006-12-19)One of the important aspects of a microstrip patch antenna array is the availability of the two feeding networks applicable to them, which are the serial and corporate feeding. A good impedance matching and optimal radiation ... -
Performance modeling and simulation of microstrip dipole array antenna for WLAN application
(Institute of Electrical and Electronics Engineering (IEEE), 2008)This paper proposed a performance simulation of a two-element, microstrip dipole array antenna for WLAN application. Simulation is done using two different simulation techniques, the circuit model (CM) derived from the ... -
Performance simulation of pyramidal and wedge microwave absorbers
(Institute of Electrical and Electronics Engineering (IEEE), 2009-05-25)Anechoic chambers signal absorption capability is directly correlated to its performance. One of the main components in enabling signal absorption is the design and material used in designing the absorbers. Two of the main ... -
The potentials of OCDM technique for local area network
(Institute of Electrical and Electronics Engineering (IEEE), 2006)Evolution of the optical fiber systems is currently seeing the general acceptance of wavelength division multiplexing (WDM) as the best mechanisms in increasing the transmission capacity of fiber optics. However, there are ... -
Preliminary development of mini anechoic chamber
(Institute of Electrical and Electronics Engineering (IEEE), 2007)The purpose of mini anechoic chamber is to allow cost effective testing of microwave signal. It is because measurements of the radiation pattern are usually done in an anechoic chamber in order to avoid reflections from ... -
Reflection loss performance of hexagonal base pyramid microwave absorber using different agricultural waste material
(Institute of Electrical and Electronics Engineers (IEEE), 2010-11-08)Hexagonal base pyramid microwave absorber is the new design of microwave absorber. In this work, two sub-shapes are considered to compare it reflection loss performance. The shapes are hexagonal and truncated hexagonal ... -
A review of antennas for Picosatellite applications
(Hindawi Limited, 2017)Cube Satellite (CubeSat) technology is an attractive emerging alternative to conventional satellites in radio astronomy, earth observation, weather forecasting, space research, and communications. Its size, however, poses ... -
Rubber tire dust-rice husk pyramidal microwave absorber
(EMW Publishing, 2011)Rubber tire dust-rice husk is an innovation in improving the design of pyramidal microwave absorbers to be used in radio frequency (RF) anechoic chambers. An RF anechoic chamber is a shielded room covered with absorbers ... -
Setup and results of pyramidal microwave absorbers using rice husks
(EMW Publishing, 2011)Agricultural wastes are considered not useful and are commonly dumped or burned after crop harvesting. Rice husks from paddy (Oryza sativa) are example of agricultural wastes. Rice husks have been investigated as the ...