Time-domain analysis of a CRLH coupled-line coupler using the CN-FDTD method

In this study, the implicit Crank–Nicolson finite-difference time-domain (CN-FDTD) method is applied to discretize the governing telegrapher's equations of a composite right-/left-handed (CRLH) coupled-line coupler. The unconditionally stable CN-FDTD is compared with the conventional leap-frog...

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Bibliographic Details
Published inInternational journal of microwave and wireless technologies Vol. 11; no. 1; pp. 94 - 103
Main Authors Gholami Mayani, Mahdieh, Asadi, Shahrooz, Karimian, Shokrollah
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.02.2019
Subjects
Accuracy
Algorithms
Antennas
Bandwidths
Couplers
Finite difference time domain method
Methods
Partial differential equations
Propagation
Research Papers
Time domain analysis
United States > US
metamaterials
CN-FDTD
coupled-line coupler
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Summary:In this study, the implicit Crank–Nicolson finite-difference time-domain (CN-FDTD) method is applied to discretize the governing telegrapher's equations of a composite right-/left-handed (CRLH) coupled-line coupler. The unconditionally stable CN-FDTD is compared with the conventional leap-frog (LF) FDTD method. The results obtained from the CN-FDTD scheme show up to 10 times increase in the temporal step size, reflecting in a dramatic decrease in processing time; in addition to having a good agreement with the LF method and the measurements.
ISSN:1759-0787
1759-0795
DOI:10.1017/S1759078718001393