Frequency Reconfigurable Self-Oscillating Active Integrated Antenna Using Metamaterial Resonators and Slotted Ground Radiator

In this paper, the concept of a frequency reconfigurable self-oscillating active integrated antenna is proposed and experimentally validated by means of metamaterial resonators and slotted ground radiator. By controlling the switch on and off, the metamaterial resonator is reconfigured between a composite right-/left-handed (CRLH) structure and a Mu-negative (MNG) structure, with or without the shunt-to-ground inductance included. The oscillation property responds accordingly. The design concept and preliminary experimental results are introduced and discussed.