Browsing by Author "Alam, Neyamul"

Filter results by typing the first few letters
Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Concentric Square Shaped Split Ring Based Metamaterial Absorber for Microwave Dual Band Applications
    (International Islamic University Chittagong, 2024-02) Alam, Neyamul
    The primary aim of this investigation is to formulate a split-ring metamaterial absorber (MMA) designed in the configuration of a maze to demonstrate superior absorption efficiency. The effective absorption is facilitated by the well-crafted split cut of the resonator within the unit cell. This metamaterial absorber (MMA) is assembled using a unit cell featuring dimensions of 10mm and a substrate composed of FR4 material with a permittivity of 4.4. Within this electromagnetic metamaterial absorber (MMA), transverse electromagnetic (TEM) mode is employed for electromagnetic waves, both under normal and oblique angles of incidence. The utilized maximum angles of incidence are 80° and 180°, respectively. Consequently, the MMA attains absorption rates of 93.70%, 93.32%, 99.96%, and 96.04% at four distinct resonant frequencies. Operating as a single negative (SNG) metamaterial absorber, the design resonates at frequencies of 4.44GHz, 6.24GHz, 8.50GHz, and 11.50GHz within the C and X bands. This proposed metamaterial design opens up possibilities for applications in radar absorption, wireless communication, microwave imaging, and radio astronomy