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

Published online by Cambridge University Press:  21 November 2018

Mahdieh Gholami Mayani Open the ORCID record for Mahdieh Gholami Mayani [Opens in a new window] ,
Shahrooz Asadi  and
Shokrollah Karimian
Mahdieh Gholami Mayani
Affiliation:
Electrical Engineering Department, Shahid Beheshti University, Tehran, Iran
Shahrooz Asadi*
Affiliation:
Electrical Engineering Department, Shahid Beheshti University, Tehran, Iran
Shokrollah Karimian
Affiliation:
Electrical Engineering Department, Shahid Beheshti University, Tehran, Iran
*
Author for correspondence: Shahrooz Asadi, E-mail: Sh_asadi@sbu.ac.ir
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Abstract

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.

Keywords

CN-FDTDcoupled-line couplermetamaterials
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 1 , February 2019 , pp. 94 - 103
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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