Influence of transmission line on stability of networks containing ideal negative capacitors (CROSBI ID 637682)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Lončar, Josip ; Muha, Damir ; Hrabar, Silvio
engleski
Influence of transmission line on stability of networks containing ideal negative capacitors
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.
active metamaterial; non-Foster; stability
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Podaci o prilogu
73-74.
2015.
objavljeno
Podaci o matičnoj publikaciji
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)
978-1-4799-7817-5
Podaci o skupu
The 2015 IEEE AP-S Symposium on Antennas and Propagation and URSI CNC/USNC
predavanje
19.07.2015-24.07.2015
Vancouver, Kanada