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Broadband Superluminal Effects in ENZ Active Metamaterial

izvorni znanstveni rad

izvorni znanstveni rad

Broadband Superluminal Effects in ENZ Active Metamaterial

Vrsta prilog sa skupa (u zborniku)
Tip izvorni znanstveni rad
Godina 2011
Nadređena publikacija Proceedings on 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Sience Meeting
Stranice str. 661-664
Status objavljeno

Sažetak

Recently, it has been shown possible to construct an (almost) dispersionless active ENZ metamaterials and transmission lines based on non-Foster elements. These structures are inherently extremely broadband (several octaves) and they may support counter-intuitive superluminal phase and group velocities. However, causality is always preserved due to finite bandwidth of any realistic non-Foster element. Here, the measurements of broadband superluminal phase and group velocity of an active transmission line operating in lower RF regime (10 MHz – 40 MHz) are reported.

Ključne riječi

metamaterial; ENZ; MNZ; non-Foster element