Metamaterial Dispersion Engineering Concepts and Applications

Metamaterial dispersion engineering is presented as a general concept for engineering the phase versus frequency response of microwave materials and devices. Two categories of metamaterials are considered, composite right/left-handed (CRLH) transmission line and multiscale ferromagnetic nanowire (FMNW) metamaterials. The dispersive Drude properties of CRLH metamaterials are derived and corresponding application examples are described in terms of CRLH dominant Taylor dispersive parameters: a tight broadband coupled-line coupler (phase velocity parameter), an ultra-wideband pulse position modulator transmitter (group velocity parameter), and a leaky-wave antenna based real-time spectrum analyzer (group velocity dispersion parameter). FMNW metamaterials are discussed as a double-Lorentz example of a multiscale metamaterial with unique properties, and their applications are illustrated with the example of a dual-band edge-mode isolator based on the recently discovered double ferromagnetic resonance.

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