Arif Mawardi Ismail
Thumbnail Image
Preferred name
Arif Mawardi Ismail
Official Name
Arif Mawardi, Ismail
Alternative Name
Ismail, Arif Mawardi
Mawardi, A.
Main Affiliation
Scopus Author ID
57224866382
Researcher ID
ABM-8075-2022

Research Output

Filters

2
2
Reset filters

Settings
Now showing 1 - 2 of 2
  • Publication
    Analysis of Power Distribution in Mach Zehnder Interferometer Polymer-based Waveguide for Sensing Applications
    ( 2022-12-01)
    Mohd. Azarulsani Md. Azidin
    ;
    Nurjuliana Juhari
    ;
    Arif Mawardi Ismail
    ;
    Norhayati Sabani
    Two Mach Zehnder Interferometer (MZI) polymer-based waveguide designs namely MZI symmetrical and MZI asymmetrical structures were simulated and analyzed using Optiwave OptiBPM10. The two designs with device size of 4000μm x 300μm exhibit clear optical propagation path when light is simulated through them as well as displaying single mode profile. Highest output power was obtained by the MZI symmetrical design at 0.90 a.u, which suggests better waveguide design for sensing applications.
  • Publication
    Design of a 1-Bit Programmable Coding Unit Cell Beamforming Metasurface
    ( 2023-01-01)
    Johari S.
    ;
    Amri M.M.
    ;
    Mohamed Nasrun Osman
    ;
    Arif Mawardi Ismail
    ;
    Muzammil Jusoh
    ;
    Rahim M.K.A.
    Traditional phased array antennas rely on costly phase shifters to steer beams by manipulating the phase of induced currents in each antenna element. In this study, we introduce a 1-bit coding metasurface as an alternative to traditional phased array antennas for beam control and modulation of electromagnetic waves. The metasurface operates at 5.8 GHz and consists of digitally controlled unit cells, each incorporating a pin diode. These diodes enable binary coding states of "1" and "0" with a significant 180-degree phase difference. The unit cell, with a dimension of 0.81λ x 0.81λ, comprises two metal patches separated by the pin diode on an FR-4 substrate. Simulation results demonstrate the distinct behavior of the metasurface, with the off-state exhibiting a reflection amplitude response of 1.8dB and the on-state showing a reduced amplitude due to on-resistance. The far-field patterns obtained from the simulations clearly indicate a 90-degree change in the radiation pattern between bit "0" and bit "1." This innovative design offers a cost-effective solution for beam control and versatile electromagnetic wave modulation, making it suitable for various applications, including beamforming in radar and communication systems.
      3  12