PERFORMANCE OF CIRCULAR SPLIT RING RESONATOR IN WIDEBAND FREQUENCY RECONFIGURABLE METAMATERIAL ANTENNA
No Thumbnail Available
Date
2021-03
Journal Title
Journal ISSN
Volume Title
Publisher
Department of Electrical Engineering, Ahmadu Bello University, Zaria
Abstract
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.
Description
Keywords
metamaterial, split ring resonator, composite right/left-handed transmission line, frequency reconfiguration, pin diode