Browsing by Author "Umar, Faiza A"

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    PERFORMANCE OF CIRCULAR SPLIT RING RESONATOR IN WIDEBAND FREQUENCY RECONFIGURABLE METAMATERIAL ANTENNA
    (Department of Electrical Engineering, Ahmadu Bello University, Zaria, 2021-03) Iliyasu, Adamu Yau; Murtala, Aminu-Baba; Saminu, Sani; Bala, Bashir D; Jahun, Kabiru I; Umar, Faiza A; Hamid, Mohamas Rijal; Rahim, Mohamad Kamal A
    This paper presents the design of wideband frequency reconfigurable metamaterial antenna with circular split ring resonator (SRR). The design is based on SRR unit cell and series left-handed capacitance CL. Bandwidth enhancement was achieved by utilizing effect of CL, and gap capacitor of SRR unit cell. The wideband antenna was reconfigured by using Pin Diode switches. Computer Simulation Technology Software was used for simulation work. From the results obtained, antenna bandwidth covered (2.3-5.3) GHz, which is equivalent to 78% fractional bandwidth with gain of 2.5 dBi and 2.28 dBi for E and H plane respectively at center frequency 3.8 GHz. Two single bands which resonate at 2.4 GHz when only S3 is ON, and 5.2 GHz when only S2 is OFF. Then, dual band which resonates at 2.4 GHz and 5.2 GHz when all switches are OFF. From the result obtained, the antenna can be used for WLAN applications.