A Reconfigurable RF-Absorber Suitable for an Efficient DC-Low Power Generation
Nurfitri 1), Elyas Palantei 2), and Intan Sari Areni 3)
1,2,3) Department of Electrical Engineering, Faculty of Engineering, Universitas Hasanuddin, Bontomarannu, Gowa 92171, South Sulawesi Province, Indonesia
Abstract
The split ring resonator (SRR) and complementary split ring resonator (CSRR) which are popular metamaterial structures for energy harvesting applications has been investigated for its characteristics and performance potential through numerical computation. The results of investigation on the design of the double-T RF energy absorber show a good performance and can operate in multiband with a large bandwidth. The desired absorber device has been optimized by adjusting the physical dimensions in the SRR and CSRR metamaterial structures. By etching two SRR unit cells and six CSRR unit cells in the ground plane, the proposed antenna shows a good performance of the return loss, gain, and bandwidth parameters. Also, the reconfigurable absorber device can be maximized the potential for absorption of RF harvesting energy, both emitted by licensed and unlicensed RF communication devices. The antenna covers the frequency spectra of GSM900 Band, GSM1800 Band, WiMAX Band, and ISM Band applications, respectively as needed. This antenna is good for absorbing RF energy with a smaller antenna size of 72.25% compared to conventional antenna.
Keywords: reconfigurable antenna, split ring resonator (SRR), complementary split ring resonator (CSRR), energy harvesting, multiband antenna
Topic: Renewable Energy