Naslov
Stability Analysis of Superluminal Metamaterial Transmission Line with Realistic Non-Foster Negative Capacitors

Autori
Hrabar, Silvio ; Zidar, Damir ; Krois, Igor

Izvornik
Automatika : časopis za automatiku, mjerenje, elektroniku, računarstvo i komunikacije (0005-1144) 53 (2012), 1; 31-37

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Non-Foster Element ; Negative Capacitor ; Stability ; Metamaterial ; Superluminal Propagation

Sažetak
Recently, it has been shown possible to go around basic dispersion energy-dispersion constraints and construct a broadband active non-Foster broadband Epsilon-Near-Zero transmission line. A basic building block of this metamaterial transmission line is an active ‘tank circuit’ that contains both conventional capacitor and non-Foster negative capacitor and it is stable if a net capacitance is positive. However, possible influence of the imperfections of a realistic negative capacitor on stability has not been investigated so far. Here, the stability analysis that takes into account both an imaginary part of the equivalent capacitance (thus, the loss or gain of a negative capacitor) and a complex impedance of a generator, is performed in time domain. The results of the analysis are in a good agreement with those obtained in recent experiments on active transmission line developed at University of Zagreb.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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