This page provides access to research works by Assoc. Prof. Dr. Azremi Abdullah Al Hadi, currently a Dean of School of Computer & Communication Engineering, Universiti Malaysia Perlis (UniMAP).

News

Skills and Expertise: : Antennas for Mobile Terminals, MIMO Antennas, Bio-electromagnetics, Radio Propagation

Recent Submissions

  • A novel 2.45GHz switchable beam textile antenna (SBTA) for outdoor wireless body area network (WBAN) applications 

    Mohd Ilman, Jais; Mohd Faizal, Jamlos, Dr.; Muzammil, Jusoh, Dr.; Sabapathy, Thennarasan; Muhammad Ramlee, Kamarudin, Assoc. Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr.; Azremi, Abdullah Al Hadi, Dr.; Emi Izhanizam, Azmi; Soh, Ping Jack; Vandenbosch, Guy AE E; Nur Laila Khamariah, Ishak (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. ...
  • Design and measurement-based evaluation of multi-antenna mobile terminals for LTE 3500MHz band 

    Azremi, Abdullah Al Hadi, Dr.; Nima, Jamaly; Katsuyuki, Haneda; Clemens, Icheln; Ville V., Viikari (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. ...
  • Influence of the user's hand on mutual coupling of dual-antenna structures on mobile terminal 

    Azremi, Abdullah Al Hadi; Ilvonen, Janne; Li, Chung Huan; Holopainen, Jari; Vainikainen, Pertti V. (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 ...
  • Simplified Modeling, Simulation and Performance Analysis Using Circuit Model for a Corporate Feed Microstrip Patch Array 

    Soh, Ping Jack; Azremi, Abdullah Al Hadi; R A Rahim; Dayang Khadijah, Hamzah; Mohd Taufik, Jusoh (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, ...
  • Multi-antenna mobile terminal diversity performance in proximity to human hands under different propagation environment conditions 

    Azremi, Abdullah Al Hadi; Papamichael, Vasilis Christos; Vainikainen, Pertti V. (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 ...
  • Ambiguity analysis of isolation - Based multi-antenna structures on mobile terminal 

    Azremi, Abdullah Al Hadi; Costa, Mario; Koivunen, Visa; Vainikainen, Pertti (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 ...
  • Rubber tire dust-rice husk pyramidal microwave absorber 

    Mohd Fareq, Abd. Malek, Dr.; Cheng, Ee Meng, Dr.; O., Nadiah; Nornikman, Hassan; M., Ahmed; M. Z. A., Abd Aziz; A. R., Osman; Soh, Ping Jack; Azremi, Abdullah Al Hadi; A., Hasnain; Mohd Nasir, Taib (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 ...
  • Site-specific evaluation of a MIMO channel capacity for multi-antenna mobile terminals in proximity to a human hand 

    Azremi, Abdullah Al Hadi; Haneda, K.; Vainikainen, P. (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 ...
  • Setup and results of pyramidal microwave absorbers using rice husks 

    Nornikman, Hassan; Fareq, Malek, Dr.; Ahmed, M.; Wee, Fwen Hoon; Soh, Ping Jack; Azremi, Abdullah Al Hadi, Dr.; Ghani, S. A.; Hasnain, A.; Taib, M. N. (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 ...
  • Reflection loss performance of hexagonal base pyramid microwave absorber using different agricultural waste material 

    Nornikman, Hassan; Fareq, Malek, Dr.; Soh, Ping Jack; Azremi, Abdullah Al Hadi (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 ...
  • Parametric studies of the pyramidal microwave absorber using rice husk 

    Nornikman, Hassan; Fareq, Malek, Dr.; Soh, Ping Jack; Azremi, Abdullah Al Hadi; Wee, Fwen Hoon; Hasnain, A. (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 ...
  • On diversity performance of two-element coupling element based antenna structure for mobile terminal 

    Azremi, Abdullah Al Hadi; Toivanen, J.; Laitinen, J.; Vainikainen, P.; Chen, X.; Jamaly, N.; Carlsson, J.; Kildal, P.-S. (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 ...
  • Microwave wedge absorber design using rice husk - An evaluation on placement variation 

    Nornikman, Hassan; Soh, Ping Jack; Fareq, Malek, Dr.; Azremi, Abdullah Al Hadi; Wee, Fwen Hoon; R. Badlishah, Ahmad, Dr. (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) ...
  • Design and analysis of a novel dielectric loaded helical antenna 

    Ezanuddin, A. A. M.; Soh, Ping Jack; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Assoc. Prof. Dr. (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 ...
  • Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application 

    Saidatul, N.A.; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Prof. Madya Dr.; Soh, Ping Jack; Fareq, Malek (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 ...
  • Design of pyramidal microwave absorber using agriculture waste with different resin content percentage 

    Nornikman, Hassan; Soh, Ping Jack; Azremi, Abdullah Al Hadi; Wee, Fwen Hoon (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 ...
  • A development of fractal PIFA (Planar Inverted F Antenna) with bandwidth enhancement for mobile phone applications 

    Saidatul Norlyana, Azemi; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Prof. Madya Dr.; Soh, Ping Jack; Fareq, Malek (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 ...
  • Design of split ring resonator filters for interference suppression in UWB 

    Leow, Chai Ling; Soh, Ping Jack; Carpenter, S.; Azremi, Abdullah Al Hadi; Ezanuddin, A. A. M. (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 ...
  • Five-element inverted-F antenna array for MIMO communications and radio direction finding on mobile terminal 

    Azremi, Abdullah Al Hadi; Kyro, M.; Ilvonen, J.; Halopainen, J.; Ranvier, S.; Icheln, C.; Vainikainen, P. (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 ...
  • A development of fractal PIFA (Planar Inverted F Antenna) with bandwidth enhancement for mobile phone applications 

    Saidatul Norlyana, Azemi; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Prof. Madya Dr.; Soh, Ping Jack; Malek, Fareq, Dr. (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 ...

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