Naslov
Influence of transmission line on stability of networks containing ideal negative capacitors

Autori
Lončar, Josip ; Muha, Damir ; Hrabar, Silvio

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings on 2015 IEEE AP-S Symposium on Antennas and Propagation and URSI CNC/USNC / Michelson, David - Piscataway (NJ) : Institute of Electrical and Electronics Engineers (IEEE), 2015, 73-74

ISBN
978-1-4799-7817-5

Skup
The 2015 IEEE AP-S Symposium on Antennas and Propagation and URSI CNC/USNC

Mjesto i datum
Vancouver, Kanada, 19.07.2015. - 24.07.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
active metamaterial; non-Foster; stability

Sažetak
Majority of non-Foster-based metamaterials or antenna matching circuits are based on simple networks that contain parallel or series combination of positive and negative capacitor. It is well-known that these networks are stable, if the overall capacitance is positive. It is shown that this stability criterion becomes fundamentally different if a segment of a transmission line is inserted between the ideal positive capacitor and ideal negative capacitor. In parallel and series networks, the presence of a transmission line segment of any finite length (different from zero) causes instability. This counter-intuitive behavior is caused by the unstable system pole located at the positive real axis of a complex plane. However, it appears possible to remove that pole by a proper design of a practical negative capacitor and, therefore, assure stable operation.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA