Now showing items 19-38 of 250

    • Capacitive micromachined ultrasonic tranducers: Technology and application 

      Muhammed Sabri, Salim; Mohd Fareq, Abd. Malek, Dr.; Boon, Raymond Whee Heng, Prof. Dr.; Khairudi, Mohd Juni.; Naseer, Sabri (Elsevier B.V., 2012-03)
      Capacitive micromachined ultrasonic tranducers (cMUTs) have recently emerged as an alternative to conventional piezoelectric transducers. They offer many advantages in terms of bandwidth, fabrication of layer arrays, ...
    • Cardinality enhancement of spectral/spatial modified double weight code optical code division multi-Access system by PIIN suppression 

      Amir Razif Arief, Jamil Abdullah, Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Anuar, Mat Safar, Ir. Dr.; Junita, Mohd Nordin; R. Badlishah, Ahmad, Prof. Dr. (Elsevier GmbH, 2013-10)
      A new two-dimensional (2-D) optical code division multiple access (OCDMA) scheme to increase the achievable system capacity is proposed. The code exhibits good cross-correlation property time and wavelength shift. Performances ...
    • Channel spacing effect on SAC-OCDMA system based modified-AND subtraction detection scheme 

      Norazimah, Mat Zain; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hamza Mohammed Ridha, Al-Khafaji; Hilal Adnan, Fadhil, Dr.; Anuar, Mat Safar, Ir. Dr. (Trans Tech Publications, 2014)
      This paper focuses on the performance of different channel spacing with AND as well as modified-AND subtraction detection techniques emphasizing the spectral-amplitude coding optical code-division multiple-access (SAC-OCDMA) ...
    • Classification of driver drowsiness level using wireless EEG 

      Mousa Kadhim, Wali; Murugappan, Muthusamy, Dr.; R. Badlishah, Ahmad, Prof. Dr. (Przegląd Elektrotechniczny, 2013)
      In this work, wireless Electroencephalogram (EEG) signals are used to classify the driver drowsiness levels (neutral, drowsy, high drowsy and sleep stage1) based on Discrete Wavelet Packet Transform (DWPT). Two statistical ...
    • Cognitive wireless sensor actor network: an agricultural perspective 

      Naseer, Sabri; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Muhammed Sabri, Salim; Rezuwan, Kamaruddin, Prof. Ir. Dr. Hj.; R. Badlishah, Ahmad, Prof. Dr.; Mohd Fareq, Abd Malek, Dr. (ICIC International, 2014-04)
      Intelligent environments are exposing the next revolutionary steps of development technologies in automation of building, industrial, home, and transportation systems. The new generation of Wireless Sensor Actor Networks ...
    • Coherence in muscle activity of the biceps brachii at middle, proximal and distal tendon region among the arm wrestling contestants 

      Nizam Uddin, Ahamed; Sundaraj, Kenneth, Assoc. Prof. Dr.; R. Badlishah, Ahmad, Prof. Dr.; Matiur J., Rahman; Md. Anamul, Islam; Md. Ashraf, Ali (Scientific Publishers of India, 2013)
      The aim of this study was to analyze the electromyographic (EMG) activity of biceps brachii (BB) muscle under the same muscle contraction in three different locations. For this reason, arm wrestling contest was conducted ...
    • A compact high directional beam antenna for WiMAX and WiFi application 

      Muzammil, Jusoh, Dr.; Mohd Faizal, Jamlos, Dr.; Muhammad Ramlee, Kamarudin, Assoc. Prof. Dr.; Sabapathy, Thennarasan; Mohd Ilman, Jais (Wiley Periodicals, Inc., 2013-07)
      A high directional beam antenna for wireless interoperability microwave access (WiMAX) and wireless fidelity (WiFi) is proposed. With a single circular radiator and a full ground plane, the antenna has successfully achieved ...
    • Compact ultra-wide band microwave filter utilizing quarter-wave length short-circuited stubs with reduced number of vias 

      Mohammad Shahrazel, Razalli; Alyani, Ismail; Mohd Adzir, Mahdi; Mohd Nizar, Hamidon (John Wiley & Sons Inc., 2009-09)
      We present here a novel pattern with compact size of ultra-wide band microstrip filter. The filter is originally modeled from five poles quarter-wavelength short-circuited stubs. It is then, transformed into a new compact ...
    • 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 ...
    • Comparison among different types of advanced modulation formats under four wave mixing effects 

      Haider Jabber, Abed; Norashidah, Md. Din, Prof. Ir. Dr.; Mohammed Hayder, Al-Mansoori; Fairuz, Abdullah, Dr.; Hilal Adnan, Fadhil, Dr. (Ukrainian Journal of Physics., 2013)
      Advanced modulation formats play a significant role for enhancing the bit rate in an optical transmission system. Ultra-long haul transmission distances are intensively investigated to further increase the spectral efficiency ...
    • Comparison between two types of computer for Industrial Ethernet performance 

      Handy, Ali Munir; Nordin, Saad, Assoc. Prof. Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Ahmad Mujahid, Ahmad Zaidi, Dr.; Muhammad Kamarul, Baharin (Trans Tech Publications, 2012)
      Ethernet is now the dominant networking in the home and office environment. Advanced of the network technology and convergence of communications, control and computer enabled the Networked Control System (NCS). Industrial ...
    • Comparison of single mode fiber and multimode fiber in deployment of SCM-OCDMA in local area network 

      Aliaa Mamoun, Kabbour; Hilal Adnan, Fadhil, Dr.; Angela, Amphawan; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Mohammad K.H., Al Mustafa (Trans Tech Publications, 2013-12)
      The integration of heterogeneous technologies promotes ubiquity and mobility. Optical code division multiple access (OCDMA) may be deployed in conjunction to SCM to improve the spectral efficiency and enhance the data rate ...
    • Construction of a new code for spectral amplitude coding in optical code-division multiple-access systems 

      Hasoon, Feras N.; Mohamad Khazani, Abdullah; Syed Alwee Aljunid, Syed Junid; Sahbudin, Shaari (Society of Photo-Optical Instrumentation Engineers (SPIE), 2007-07)
      An enhanced code structure for spectral amplitude coding in optical code division multiple access systems based on double weight (DW) code families is proposed. Enhanced double weight (EDW) codes possess ideal cross-correlation ...
    • Correlation analysis on UWB MIMO tree-antenna orientations 

      Muzammil, Jusoh, Dr.; Mohd. Faizal, Jamlos, Dr.; Muhammad Ramlee, Kamarudin, Assoc. Prof. Dr.; Ade, Erawan (Wiley Periodicals, Inc., 2013-03)
      This research proposes a miniaturized antenna with a novel design for the ultra-wideband (UWB) multiple-input multiple-output (MIMO) system. The UWB-MIMO tree-antenna (UMTA) design consists of two symmetrical designs with ...
    • Correlation studies between electronic nose response and headspace volatiles of Eurycoma longifolia extracts 

      Shafiqul Islam, A.K.M.; Zhari, Ismail; Bahruddin, Saad; Abdul Rahman, Othman; M. Nizam, Ahmad; Ali Yeon, Md Shakaff (Elsevier B.V., 2006-12)
      Most herbs have their own characteristic smell due to the presence of volatile compounds. Traditionally, volatiles are analyzed by using sophisticated and expensive gas chromatography (GC) in tandem with a selective mass ...
    • A cost-effective method for high-quality 60GHZ optical millimeter wave signal generation based on frequency quadrupling 

      Nael Ahmed, Al-Shareefi; Syed Idris, Syed Hassan, Prof. Dr.; Mohd Fareq, Abd. Malek, Dr.; Razali, Ngah, Assoc. Prof. Dr. ; Sura A., Abbas; Syed Alwee Aljunid, Syed Junid, Prof. Dr. (EMW Publishing, 2013)
      In this paper, we present a cost effective method to generate a high-quality quadruple frequency optical millimeter- wave (MMW) signal using an integrated dual-parallel Mach-Zehnder modulator (IDP-MZM). Not only does the ...
    • Coupling element-based dual-antenna structures for mobile terminal with hand effects 

      Abdullah Al-Hadi, Azremi; Ilvonen, Janne; Valkonen, Risto; Holopainen, Jari; Kivekäs, Outi; Icheln, Clemens (Springerlink, 2011-09)
      This paper presents a comprehensive simulation study on the performance of coupling element-based dual-antenna structures on a mobile terminal at the 2,000 MHz Universal Mobile Telecommunications System (UMTS) frequency ...
    • Critical Data-Based Incremental Cooperative Communication for Wireless Body Area Network 

      Hameed, Al-Mishmish; Ahmed Alkhayyat; Hasliza, A. Rahim; R. Badlishah, Ahmad; Abbasi, Qammer H.; Hammood, Dalal A. (MDPI AG, 2018)
      Wireless Body Area Networks (WBANs) are single-hop network systems, where sensors gather the body’s vital signs and send them directly to master nodes (MNs). The sensors are distributed in or on the body. Therefore, ...
    • A CWDM/DWDM arrayed waveguide grating based on photodefinable polymer 

      Ibrahim, M. H.; Kassim, N. M.; Mohammad, Abu Bakar; Ismahayati, Adam (Institutul National de Cercetare-Dezvoltare pentru Optoelectronica, 2009-01)
      New design of conventional AWG structures for CWDM/DWDM application based on photodefinable BenzoCyclobutene (BCB 4024-40) polymer is presented. The devices are designed on BK7 glass substrate and thin layer of SiO2 as ...
    • 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 ...