Browsing Azremi Abdullah Al Hadi, Assoc. Prof. Ts. Dr. by Title
Now showing items 1-20 of 45
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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 ... -
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 ... -
Comparison of Direct Contact Feeding methods for a Rectangular Microstrip Patch Antenna
(Universiti Malaysia Perlis, 2007)Microstrip patch antennas have a variety of feeding technique applicable to them. It can be categorized in accordance to the main power transfer mechanism from the feed line to the patch. Contactingfeeds investigated in ... -
A cylindrical Barium Strontium Titanate (BST) dielectric resonator antenna for 5.0 GHz wireless LAN application
(Institute of Electrical and Electronics Engineering (IEEE), 2008-05-19)This paper presents a dielectric resonator antenna (DRA) suitable for wireless communication applications at 5.0 GHz. The proposed DRA utilizes a ferroelectric material, Barium Strontium Titanate (BST) in cylindrical form ... -
Design and analysis of a novel dielectric loaded helical antenna
(World Scientific and Engineering Academy and Society (WSEAS) Press, 2009)Helical antennas have been a popular antenna configuration for various applications for its simple structure. This work describes the study on a novel, custom-shaped dielectric loaded helical antenna incorporated on an ... -
Design and application of a novel dielectric loaded helical antenna to WLAN products
(Institute of Electrical and Electronics Engineering (IEEE), 2009-05-25)BST dielectric loaded helical antenna designed here was found to be as good to operate on WLAN products. Characteristics of the new dielectric material barium strontium titanate (BST) also known as dielectric resonator had ... -
Design and measurement-based evaluation of multi-antenna mobile terminals for LTE 3500MHz band
(EMW Publishing, 2013)Design of multi-element antennas (MA) for small mobile terminals operating at higher frequencies remains challenging despite smaller antenna dimension and possibility of achieving electrically large separation between them. ... -
Design of a microstrip patch antenna using low temperature co-fired ceramic technology
(Institute of Electrical and Electronics Engineering (IEEE), 2008-12-01)This paper presents the design of a single rectangular microstrip patch antenna for operation at 2.4 GHz frequency on Radio Frequency (RF) antenna application using Low Temperature Co-fired Ceramic (LTCC) technology. LTCC ... -
Design of pyramidal microwave absorber using agriculture waste with different resin content percentage
(Universiti Malaysia Pahang (UMP), 2009-06-20)Agriculture waste has many potential to produce an alternative and beneficial product for any suitable application such as microwave absorber for anechoic chamber. In this work, agriculture waste like rice husk from ... -
Design of split ring resonator filters for interference suppression in UWB
(Institute of Electrical and Electronics Engineering (IEEE), 2008-12-02)Microstrip stop-band filters based on complementary split ring resonators has been proposed in this project. Two shapes (circle and square) of SRRs have been investigated to come out device which is designed to suppress ... -
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 development of fractal PIFA (Planar Inverted F Antenna) with bandwidth enhancement for mobile phone applications
(Institute of Electrical and Electronics Engineering (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 ... -
Dual Band Planar Inverted F Antenna (PIFA) with L-Shape Configuration
(EDP Sciences, 2017)One of the most used antennas in mobile devices is planar inverted F antenna (PIFA). PIFA can be design in dual band frequencies due to the coverage of the wireless service in a mobile device that requires a multiple ... -
A dual band planar monopole antenna with inverted-M parasitic plane
(Institute of Electrical and Electronics Engineering (IEEE), 2007)Introduction of parasitic plane as additional radiator helps to produce desired resonant frequencies, while helping to minimize the size of the antenna. A dual-band monopole antenna with parasitic plane is designed to ... -
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 ... -
Helical Antenna sensor for Different Liquid Type Identification
(EDP Sciences, 2017)There are variety of lliquid sensor measurement systems that available in the market nowadays. It is used to measure various parameter for wide range application or to address a specific application. However, most of the ... -
Impedance Analysis of Mobile Phone Antenna in the Presence of User's Hand
(EDP Sciences, 2017)User interaction (UI) has been identified to degrade the performance of the antenna. A system that measures impedance characteristics of a planar inverted-F antenna (PIFA) when there are user interactions is designed using ... -
Influence of the user's hand on mutual coupling of dual-antenna structures on mobile terminal
(Institute of Electrical and Electronics Engineers (IEEE), 2012-03-26)This paper studies the influence of the user's hand on the mutual coupling of dual-antenna structures on a mobile terminal. The terminal consists of two planar inverted-F antennas (PIFA) on a typical 100 × 40 mm 2 mobile ... -
An investigation of Rayleigh distribution in reverberation chamber
(Institute of Electrical and Electronics Engineering (IEEE), 2006-09-12)Amplitude fluctuations in signals received over mobile radio channels are typically modeled by a Rayleigh distribution. The field statistics in the volume of the enclosure are shown to correspond to the Rayleigh statistics ...