Now showing items 41-60 of 281

    • 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 ...
    • Design and analytical modeling of folded waveguide traveling wave tube 

      Fareq, Malek (Elsevier B. V., 2009-12-21)
      We are developing a simple analytical model for the design of the folded waveguide traveling wave tube (FWTWT). Numerical software does exist for the design of FWTWT but requires large computer run time, is costly and does ...
    • Design and analytical modeling of folded waveguide traveling wave tube 

      Fareq, Malek, Dr. (Elsevier B. V., 2009-12-21)
      We are developing a simple analytical model for the design of the folded waveguide traveling wave tube (FWTWT). Numerical software does exist for the design of FWTWT but requires large computer run time, is costly and does ...
    • Design and development of a PC-based automated data logging system for measuring temperature 

      Md. Abdullah, Al Mamun; Sundaraj, Kenneth, Assoc. Prof. Dr.; Nasim, Ahmed, Dr.; Matiur J., Rahman; Md. Mijanur, Rahman, Dr.; Nizam Uddin, Ahamed (Asian Research Publishing Network (ARPN), 2013-11)
      Currently, accurate information of the temperature over time is required in medical, scientific, and various industrial applications. The objective of this work was to design and develop a fully automated microcontroller-based ...
    • Design and development of wireless communication transceiver to support RFID reader at UHF band 

      Mohammad Shahrazel, Razalli; Mohd Azir, Mahdi, Prof. Madya Dr.; Alyani, Ismail, Dr.; Siti Mariam, Shafie; H., Adam (Brill Academic Publishers, 2010-11-01)
      This paper discusses the design and development of wireless transceiver to support communication between Radio Frequency Identification (RFID) reader and host computer. The transceiver is designed and developed to operate ...
    • 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. ...
    • Design and simulation a new code with zero cross-correlation for SAC-OCDMA networks 

      Thanaa Hussein, Abd; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil, Dr.; R. Badlishah, Ahmad, Prof. Dr. (INSInet Publications, 2012-03)
      Design and simulation of new code family for the Spectral Amplitude Coding-Optical Code Division Multiple Access (SAC-OCDMA) networks is present. The new code family called Multi Diagonal (MD) code. The MD code family ...
    • Design considerations of high performance optical code division multiple access: A new spectral amplitude code based on laser and light emitting diode light source 

      Hilal Adnan, Fadhil; Syed Alwee Aljunid, Syed Junid, Prof. Madya; R. Badlishah, Ahmad, Prof. Madya Dr. (The Institution of Engineering and Technology, 2010-02-01)
      A new code of optical code division multiple access (OCDMA) based on spectral amplitude coding (SAC) is described and analysed. The coding technique is called random diagonal (RD) code. One of the important properties of ...
    • Design of a broadband all-textile slotted PIFA 

      Soh, Ping Jack; Vandenbosch, Guy A E; Liam, Ooi Soo; Nurul Husna, Mohd Rais (Institute of Electrical and Electronics Engineering (IEEE), 2012-01)
      A new broadband textile based PIFA antenna structure designed for wireless body area network (WBAN) applications is presented. The new topology can be directly integrated into clothing. The study starts by considering three ...
    • Design of a free electron maser without wiggler 

      Mohd Fareq, Malek; Lucas, James; Yi, Huang (World Scientific and Engineering Academy and Society (WSEAS), 2010-04)
      We are developing prototype free electron maser (FEM) that is compact, powerful and efficient for potential industrial applications. The design, set-up and results of a novel X-band rectangular waveguide prebunched free ...
    • Design of Binary Coded Pulse Trains with Good Autocorrelation Properties for Radar Communications 

      Siti Julia, Rosli; Hasliza, Rahim; Ruzelita, Ngadiran; Khairul Najmy, Abdul Rani; Muhammad Imran, Ahmad; Wee, Fwen Hoon (EDP Sciences, 2018)
      Finite length of sequences that are modulated both in phase and amplitude and have an ideal autocorrelation function (ACF) consisting of merely a pulse have many applications in control and communication systems. They are ...
    • Design of spectral amplitude coding optical code-division multiple-access system using random diagonal codes 

      Fadhil, H. A.; Syed Alwee Aljunid, Syed Junid; R. Badlishah, Ahmad (Fachverlag Schiele & Schoen GmbH, 2008)
      In this paper we study the use of a new code called Random Diagonal (RD) code for Spectral Amplitude Coding (SAC) optical Code Division Multiple Access (CDMA) networks, RD code is constructed using code level and data ...
    • Development of a new approach for high-quality quadrupling frequency optical millimeter-wave signal generation without optical filter 

      Nael A., Al-Shareefi; Syed I., S. Hassan; Mohd Fareq, Abd Malek, Dr.; Razali, Ngah, Assoc. Prof. Dr.; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Rashid Ali, Fayadh; Jaafar Adhab, ALdhaibani; Hasliza, A. Rahim (PIER, 2013)
      In this paper, we propose a new approach to generate quadrupling-frequency optical millimeter-wave (mm-wave) signal with carrier suppression by using two parallel Mach-Zehnder modulators (MZMs) in Radio-over-fiber (RoF) ...
    • Development of a new code family based on SAC-OCDMA system with large cardinality for OCDMA network 

      Thanaa Hussein, Abd; Syed Alwee Aljunid, Syed Junid, Prof. Dr.; Hilal Adnan, Fadhil; R. A., Ahmad; Mohamad Naufal, Mohamad Saad, Dr. (Elsevier Inc., 2011-07)
      We have proposed a new Multi-Diagonal (MD) code for Spectral Amplitude - Coding Optical Code Division Multiple Access (SAC-OCDMA). Although this new MD code has many properties, one of the important properties of this code ...
    • The development of FPGA-based wireless channel simulator using LabVIEW 

      Nor Aswani, Mamat; Razali, Ngah, Assoc. Prof. Dr.; Chude-Okonkwo, Uche Anicetus K Chude, Dr.; Muhamad Asmi, Romli (Penerbit UTM Press, 2013)
      The development of channel model for wireless communication system is currently becoming important to fulfill the entire user's requirements and increasing demand where to provide a good communication link between the users ...