Multi-band frequency reconfigurable metamaterial antenna design

Abstract

This paper presents the design of multi-band frequency reconfigurable metamaterial antenna. The design is based on the idea of obtaining multi-band antenna by applying frequency reconfiguration in metamaterial antenna. Some of it advantages include compactness and multi-bands frequency operation. This is achieved by eliminating the horizontal ohm’s shape slot from the basic structure and introduction of H slot in the top patch, horizontal and vertical extension V and X respectively in bottom patch. Frequency reconfiguration was achieved through the operation of three PIN Diode switches at different position. Computer Simulation Technology (CST) software was used to determine the operation and effectiveness of the proposed antenna. From the simulation results, 1.6, 2.6, 3.3, 4.5 and 5.4 GHz operating bands were obtained with realized peak gain 1.94, 2.28, 3.2, 2.9 and 4.25 dBi respectively with average efficiency of 95%. From the results obtained, the bands covered the WLAN and WiMAX band mostly in multi-band form which is suitable for application in cognitive radio to reduce spectrum congestion and interference.