Liu Haixia

Generalized system function analysis of resonant behavior of electromagnetic open systems

AbstractThe generalized system function, H(s), directly associated with the radiated or scattered fields is presented to effectively analyze the special resonant behavior of electromagnetic open systems in this paper, which is adaptively constructed by using the model-based parameter estimation (MBPE) technique in the complex frequency domain. By analyzing the characteristics of complex zeros, poles and residues of H(s) in a finite operational frequency band, we can effectively determine resonant frequencies and resonant intensity of electromagnetic open systems. It is known that an analysis of Q-factor of antenna and scattering systems has been an interesting and challenging problem. Based on H(s) and the complex frequency

Method for extracting equivalent circuit parameter of dual-frequency-band frequency selective surface

\tilde \omega

Device for generating multimodal orbital angular momentum of mechanical reconfigurable array antennas and method thereof

theories, a complex frequency method for Q-factor of electromagnetic open systems is presented in this paper. Some examples of the practical antenna arrays are given to illustrate the applications and validity of the generalized system function theory proposed by this paper.