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Frequency reconfigurable epsilon negative metamaterial antenna based on coupled electric field resonator

This paper proposes metamaterial (MTM) antenna based on electric field coupled resonator (ELC) for frequency reconfigurable antenna. It is composed of CPW fed straight line monopole and ELC resonator with the size of 11mm × 14 mm. By inserting two PIN diodes between the gaps at both side of the ELC resonator, it is possible to switch ON or OFF the unit cell. The antenna has been simulated using CST Microwave Studio software tool. The simulation result shows that the proposed antenna is capable of reconfiguring up to four modes for five different frequencies which are 2.0 GHz, 2.10 GHz, 2.14 GHz, 2.54 GHz and 2.92 GHz.