Title :
Causality and delay and physics in real systems
Author :
Tsiklauri, Mikheil ; Zvonkin, Mikhail ; Jun Fan ; Drewniak, James ; Chen, Qinghua Bill ; Razmadze, Alexander
Author_Institution :
EMC Lab., Missouri Univ. of Sci. & Technol., Rolla, MO, USA
Abstract :
In the present work causality property and physics behind it is analyzed for physical systems. Different methodologies for checking or enforcing causality in both time and frequency domain are discussed. Causality metric for measuring causality violation is introduced. Physical anomaly of a system with perfectly linear phase is discussed and shown that small perturbation of non-linear portion of the phase can fix the non-causal anomaly.
Keywords :
causality; delays; frequency-domain analysis; signal processing; time-domain analysis; transfer functions; transient response; causality metric; causality property; causality violation measurement; delay; frequency domain; impulse responses; noncausal anomaly; nonlinear portion perturbation; perfectly linear phase; physical systems; signal integrity; time domain; transfer function; Delays; Estimation; Insertion loss; Numerical models; Polynomials; Transfer functions; Causality metric; Delay; Impulse response; Kramers-Kronig relations; Linear phase; Pulse response; Transfer function;
Conference_Titel :
Electromagnetic Compatibility (EMC), 2014 IEEE International Symposium on
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4799-5544-2
DOI :
10.1109/ISEMC.2014.6899107
