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2015-10-22
Equivalent-Circuit Models for Efficient Transmission and Dispersion Analyses of Multi-State Periodic Structures
By
Progress In Electromagnetics Research, Vol. 153, 93-102, 2015
Abstract
An equivalent-circuit model for a reconfigurable unit cell is proposed. This circuit model facilitates fast prediction of scattering parameters and dispersion analyses of a reconfigurable periodic structure. The cutoff frequencies obtained using equivalent-circuit models are in excellent agreement with those from measurements and full-wave numerical simulations. The proposed circuit model is then modified to include non-ideal, commercial RF FET switches. The effect of such a switch in each state, On or Off, is modeled by a frequency-dependant impedance, derived from the scattering parameters of the switch. The proposed technique can be used to analyze a reconfigurable periodic structure with any type of switches. For the structure with 24 unit cells considered here, the equivalent circuit model is about five orders of magnitude faster than full-wave simulations.
Citation
Ladislau Matekovits, Dushmantha Thalakotuna, Karu P. Esselle, Stuart G. Hay, and Michale Heimlich, "Equivalent-Circuit Models for Efficient Transmission and Dispersion Analyses of Multi-State Periodic Structures," Progress In Electromagnetics Research, Vol. 153, 93-102, 2015.
doi:10.2528/PIER15070801
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