Composite right/left handed transmission line metamaterials and applications

Firstly, it is theoretically justified that the microstrip line metamaterials consisted of the composite right/left handed transmission line is of the left handed property. Then, the metamaterials possessing the characteristic of wide frequency band are constructed with the composite right/left handed transmission line. At the same time, the investigation results of the passive microwave devices composed of the metamaterials, which are analyzed, designed and developed by our group in recent years, are introduced. The investigation results indicate that because of having the left handed property of the composite right/left handed transmission line, the novel devices are predominant either in insert loss, size or in performances than the devices consisted of the traditional microstrip lines.