ABSTRACT
Small printed antennas suffer from low efficiency. Low profile efficient antennas are crucial in the development of commercial compact 5G communication and Internet of things (IOT) systems. The communication, IOT and biomedical industries have been in rapid growth in recent years. It is important to develop efficient high gain compact antennas for 5G communication and IOT systems. Metamaterials and fractal structures may be used to improve the efficiency of compact printed antennas. In this chapter metamaterial antennas will be presented. Metamaterial technology is used to design small wideband wearable antennas with high efficiency. Design considerations and the computed and measured results of printed metamaterial antennas with high efficiency are presented in this chapter. The proposed antenna may be used in communication and medical systems. The antennas’ S11 results for different positions on the human body are presented in this chapter. The gain and directivity of the patch antenna with split ring resonator (SRR) is higher by 2.5 dB than the patch antenna without SRR. The resonant frequency of the antenna with SRR on human body is shifted by 3%.
