源于人工电磁材料的双频高效电小天线

Electrically small antennas are a critical enabling technology for wireless communications. Recently a series of metamaterial-based and metamaterial-inspired electrically small antennas are presented to improve the performance. In this paper, a novel dual-band metamaterial-inspired electrically small antenna was proposed based on analyzing the theory of metamaterial-based and metamaterial-inspired electrically small antennas. The main innovation of this design was the introduction of parasitic elements in the very near field of an electrically small radiator. The parasitic structure provids the means for antenna system to be resonant and resistive matched to the source without any external network. The performance of this dual-band antenna system was analyzed. The simulated results showed that high efficiency at two frequencies could be obtained.