Recent advances in composite right/left-handed metamaterial structures

This talk is concerned with microwave applications of left handed metamateials based on the composite right/left handed transmission line configurations. This technique does not rely on resonance to realize negative permittivity and permeability but is characterized broadband structures that can be one dimension or multidimensions. A brief explanation of the principle of this phenomenon is described. The majority of the talk is on microwave component applications with unique characteristics. Significant progress has been made on the microwave applications. The examples include leaky wave antennas, compact antennas, directional couplers, dual band and broadband components, harmonic filters, and distributed amplifiers. Additionally, an alternative method to realize the left handed material by means of dielectric resonators is briefly presented.