Now showing items 21-40 of 45

    • 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 ...
    • Multiband fractal planar inverted F antenna (F-PIFA) for mobile phone application 

      Saidatul Norlyana, Azemi; Azremi, Abdullah Al Hadi; R. Badlishah, Ahmad, Prof. Madya Dr.; Soh, Ping Jack; Fareq, Malek, Dr. (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 ...
    • Comparison of Direct Contact Feeding methods for a Rectangular Microstrip Patch Antenna 

      Soh, Ping Jack; Azremi, Abdullah Al Hadi; Anuar, Mat Safar; A. Nurainunnazli (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 

      Azremi, Abdullah Al Hadi; Saidatul Norlyana, Azemi; Soh, Ping Jack; Muhammad Asri, Idris; Norsuria, Mahmed (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 of a microstrip patch antenna using low temperature co-fired ceramic technology 

      Mohd Natashah, Norizan; Muammar, Mohamad Isa; Soh, Ping Jack; Azremi, Abdullah Al Hadi; Norhawati, Aahmad (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 ...
    • Small rectangular parasitic plane with diamond patch antenna for WLAN application 

      Norra Shiella, Razali; Azremi, Abdullah Al Hadi; Saidatul Norlyana, Azemi; Soh, Ping Jack; Imran Mohd, Ibrahim (Institute of Electrical and Electronics Engineering (IEEE), 2008)
      The design and experimental demonstrations of a microstrip patch antenna for broadband WLAN application are presented. The physical parameters of the antenna, including based on a diamond patch, antenna input impedance, ...
    • A parametric study of broadband planar inverted F antenna (PIFA) for WLAN application 

      Azremi, Abdullah Al Hadi; Saidatul, Norlyana Azemi; R. Badlishah, Ahmad; Soh, Ping Jack (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 ...
    • Design and application of a novel dielectric loaded helical antenna to WLAN products 

      Mohammad Ezanuddin, Abdul Aziz; Azremi, Abdullah Al Hadi; Soh, Ping Jack; Anuar, Mat Safar (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 ...
    • Performance simulation of pyramidal and wedge microwave absorbers 

      Nornikman, Hassan; Soh, Ping Jack; Azremi, Abdullah Al Hadi; Anuar, Mat Safar (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 ...
    • Preliminary development of mini anechoic chamber 

      Hasnain, A.; Imran, M.I.; Rohaiza, Z.S.; Roslan, S.; Takiyuddin, A.A.; Rusnani, A.; Azremi, Abdullah Al Hadi (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 ...
    • Performance analysis and prediction using circuit model in a microstrip patch array 

      Soh, Ping Jack; Azremi, Abdullah Al Hadi; Dayang Khadijah, Hamzah; Raha, Abdul Rahim; Mohd Taufik, Jusoh; Junita, Mohd Nordin; R. Badlishah, Ahmad (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, ...
    • Parametric performance simulation of a proximity-coupled fed microstrip dipole array 

      Soh, Ping Jack; Amir Razif Arief, Jamil Abdullah; Aiza, M. M.; Azremi, Abdullah Al Hadi; Abdul Aziz, M.Z A; Rahim, M.K A (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 ...
    • Performance modeling and simulation of microstrip dipole array antenna for WLAN application 

      Soh, Ping Jack; Amir Razif Arief, Jamil Abdullah; Aiza, M. M.; Azremi, Abdullah Al Hadi; Abd Aziz, M. Z A (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 ...
    • A comparative study of small antenna efficiency measurements 

      Azremi, Abdullah Al Hadi; Shiraz, H.Ghafouri; Hall, Peter S. (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 ...
    • A dual band planar monopole antenna with inverted-M parasitic plane 

      Nurul, H. M R; Soh, Ping Jack; Azremi, Abdullah Al Hadi; Ibrahim, M.I.; R. Badlishah, Ahmad (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 ...
    • Small rectangular parasitic plane as patch antenna ground plane for broadband WLAN application 

      Norra Shiella, Razali; Azremi, Abdullah Al Hadi; Soh, Ping Jack; Saidatul Norlyana, Azemi; Ibrahim, M.I. (Institute of Electrical and Electronics Engineering (IEEE), 2007)
      This paper proposed a microstrip patch antenna for broadband WLAN application. The antenna is based on an octagonal patch, which is simulated and analyzed by using Microwave Office (MWO) for WLAN applications. The designed ...
    • An investigation of Rayleigh distribution in reverberation chamber 

      Azremi, Abdullah Al Hadi (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 ...