Compact Frequency Selectivity Wideband Reconfigurable Metamaterial Antenna Design

This paper presents the design of compact frequency selectivity wideband reconfigurable metamaterial antenna. The design is based on the principles of composite right/left-handed transmission line CRLH-TL. Series capacitance CL and series inductance LR are used to reduce the quality factor (Q-factor) of the proposed antenna for bandwidth enhancement. Electric couple ELC was introduced to improve the matching condition of the proposed antenna. The antenna was reconfigured by using frequency reconfiguration technique with PIN Diode switches. Computer Simulation Technology (CST) Software is used for simulation work. From the simulation result, wideband with bandwidth range (2.3-5.3) GHz which is equivalent to 80% fractional bandwidth was obtained. The wideband was reconfigured to a single bands resonating at 3.0GHz, 5.2GHz, dual-bands at (4.4GHz, 5.2GHz), (3.7GHz, 4.8GHz) and multi-band with resonating bands at 1.8GHz, 3.7GHz, 4.4GHz, 5.0GHz. The realized peak gain at E and H plane are 2.27dBi and 2.26dBi respectively. The antenna can be used for GSM, WLAN and 5G lower bands applications.