Left-handed compact multi-band circular metamaterial for S-, C- and Ku-band applications

Abstract

The purpose of this study is to introduce multi-band circular metamaterial structure for S-, C- and Ku-band applications. This research study was carried out because of the discovery of new exotic characteristics using metamaterial. The proposed circular metamaterial is numerically simulated with utilizing widely available Computer Simulation Technology (CST) software. The metamaterial design consisted of four different circular rings on the FR-4 substrate material with a dimension of 8 × 8 mm 2 and 1.6 mm thick. 2 to 18 GHz frequency range was selected for this simulation. The proposed unit cell metamaterial design exhibits multi-band resonance frequencies at 3.38 (S-band), 6.28 (C-band), 12.76 and 16.92 GHz (Ku-band) respectively. The obtained resonance frequencies have tolerable magnitude values such as −19.53 dB, −22.56 dB, −22.32 dB and −19.79 dB respectively. Furthermore, the proposed circular metamaterial exhibits left-handed characteristics at all four resonance frequencies. For instance, from 3.42 to 3.80 GHz (at S-band), 6.43 to 7.27 GHz (C-band), and 13.28 to 13.69 GHz (at Ku-band), the metamaterial design structure manifests unique properties. Consequently, circular metamaterial with unique properties can practice in numerous application fields such as wireless headphone, wireless computer network, satellite communication, weather monitoring, etc.