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Development of a Lid Sealed furnace for the production of Magnesium alloys
(Universiti Kebangsaan Malaysia (UKM), 2008-12-03)
An atmosphere-controlled furnace was designed for the casting process of highly reactive Mg metal and its alloys. Instead of open crucible furnace, the melting process was done under controlled atmosphere which contained ...
A development of fractal PIFA (Planar Inverted F Antenna) with bandwidth enhancement for mobile phone applications
(Institute of Electrical and Electronics Engineers (IEEE), 2009-11-16)
A novel Fractal planar inverted F antenna (F-PIFA) based on the self affinity design is presented in this paper. The procedure for designing a Fractal Planar Inverted F Antenna is explained and the 2nd iteration of Sierpinski ...
A comparative study of small antenna efficiency measurements
(Institute of Electrical and Electronics Engineering (IEEE), 2005)
Three methods of determining an antenna's efficiency are compared to measure the efficiency of three different antennas (two monopole antennas with attenuator and surface mount resistor, and modified folded monopole patch ...
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 ...
Site-specific evaluation of a MIMO channel capacity for multi-antenna mobile terminals in proximity to a human hand
(The European Association on Antennas and Propagation (EurAAP), 2011-04-10)
This paper presents a comprehensive evaluation on the Multiple-Input Multiple-Output (MIMO) channel capacity performance of a coupling element -based multi-antenna structures on a mobile terminal at the 2000 MHz Universal ...
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 ...
Five-element inverted-F antenna array for MIMO communications and radio direction finding on mobile terminal
(Institute of Electrical and Electronics Engineering (IEEE), 2009-12-08)
A five-element inverted-F antenna array on mobile terminal for both multiple input multiple output (MIMO) communications and radio direction finding (RDF) applications is presented. The multi-element antenna (MEA) system ...
Ambiguity analysis of isolation - Based multi-antenna structures on mobile terminal
(Institute of Electrical and Electronics Engineering (IEEE), 2011-04-10)
This paper presents a comprehensive numerical study on the ambiguities for different isolation-based multi-antenna structures. The focus is on four-element planar inverted-F antennas (PIFA) array on a typical 100mm 40mm ...
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, ...
Simplified Modeling, Simulation and Performance Analysis Using Circuit Model for a Corporate Feed Microstrip Patch Array
(Institute of Electrical and Electronics Engineers (IEEE), 2007-03-27)
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, ...