Browsing by Subject "Reflectivity"

Now showing items 1-5 of 5

    • Design and development of pyramidal microwave absorber using agricultural waste 

      Nornikman, Hassan (Universiti Malaysia Perlis (UniMAP)School of Computer and Communication Engineering, 2011)
      Agriculture waste has potential to be used as an alternative material for the microwave absorber that used in the RF anechoic chamber. Compared to the current material that used in the commercial market such as polystyrene ...

    • Effect on source signal condition for pyramidal microwave absorber performance 

      Nornikman, Hassan; Fareq, Malek, Dr.; Soh, Ping Jack (Institute of Electrical and Electronics Engineers (IEEE), 2010-05-11)
      In designing a microwave absorber for anechoic chamber, there are many condition can affect the performance of microwave absorber. In this work, four conditions are discussed to compare the reflectivity or S11 of the ...

    • Far-infrared optical transmission through asymmetrical ferroelectric films 

      Mohamad Nazri, Abdul Halif (Research India Publications, 2005)
      Investigation of far-infrared (FIR) spectroscopy for symmetrical ferroelectric (FE) films are discussed theoretically based on the basis of the Tilley-Zeks (TZ) model using Landau free energy expansion, Landau- Khalatnikov ...

    • The phenomenological theory of Far-Infrared spectroscopy for a ferroelectric fim system 

      Mohamad Nazri, Abdul Halif; K.H. Chew; Tilley, David R.; Junaidah, Osman (Malaysian Institute of Physics & National University of Malaysia, 2004-10-05)
      We describe a detailed phenomenological theory of far-infrared (FIR) spectroscopy in symmetric and asymmetric ferroelectric (FE) film for the second and first-order phase transition. For the asymmetric FE film, a silicon ...

    • Theoretical investigation of far-infrared optical behaviors in asymmentrical first-order ferroelectrtric thick film 

      Mohamad Nazri, Abdul Halif; Khian Hooi, Chew; David R., Tilley; Junaidah, Osman (Universiti Putra Malaysia (UPM), 2005-12-06)
      This paper gives a detailed, fully numerical approach to investigate the behavior of far-infrared (FIR) waves in the first-order of asymmetrical thick film ferroelectrics on semiconductor substrate. The theoretical calculation ...