Dual-band 3D electrically small antenna based on split ring resonators

A novel 3D electrically small antenna with dual-band is presented, optimized, and measured in this article. The proposed antenna is composed of three circular split ring resonators and a vertical line, which has been obtained through rotating angles of three circular split ring resonators from the same direction to 260°, 0°, and 340°. The optimized electrically small antenna is worked in 0.789 GHz and 1.183 GHz and has been verified that the simulated results are similar to the measured results. The design of the antenna structure conforms to the miniaturization in modern wireless communication systems. A novel 3D electrically small antenna with dual-band is presented, optimized, and measured. This dual-band electrically small antenna is realized by rotating angles of the defect. To further applications, our design scheme is applied in a paper-based device with the same high performance. This article provides a new address to design a multi-band antenna.