Hybrid method for transient responses of transmission line in an apertured enclosure based on FETD method and transmission line equations

A hybrid method combining the finite-element time-domain (FETD) method and transmission line (TL) equations (FETD-TL) is presented for evaluating the transient responses of a lossy TL in an apertured rectangular enclosure excited by electromagnetic pulses. First, the electric fields in the enclosure...

Full description

Saved in:
Bibliographic Details
Published in:IET science, measurement & technology measurement & technology, 2020-11, Vol.14 (9), p.685-695
Main Authors: Gong, Yanfei, Jiang, Luhang
Format: Article
Language:English
Subjects:
apertured enclosure
apertured rectangular enclosure
Bethe small holes theory
complex lumped parametric networks
electromagnetic pulse
equivalent distributed sources
FDTD‐TL method
FETD method
finite difference time‐domain analysis
finite element analysis
finite‐difference time‐domain method
finite‐element time‐domain method
first‐order TL equation
hybrid method
iterative methods
lumped parameter networks
Research Article
second‐order TL equation
single iteration variable
transient currents
transient response
transient responses
transient voltages
transmission line equations
transmission line theory
Citations: Items that this one cites
Items that cite this one
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A hybrid method combining the finite-element time-domain (FETD) method and transmission line (TL) equations (FETD-TL) is presented for evaluating the transient responses of a lossy TL in an apertured rectangular enclosure excited by electromagnetic pulses. First, the electric fields in the enclosure without the TL are calculated based on the Bethe's small holes theory and the mirror procedure. Then, the enclosure's electric fields are introduced into the second-order TL equation for current as the equivalent distributed sources. The transient currents induced on the TL are obtained by solving the second-order TL equation for current based on the FETD method with a single iteration variable. Finally, the transient voltages induced on the TL are computed by discretising the first-order TL equation. Compared with the method based on finite-difference time-domain (FDTD) method and TL (FDTD-TL) via several examples, the proposed hybrid method is proved to be correct and effective, which possesses much higher convenience and efficiency than FDTD-TL method in dealing with TL model terminated by complex lumped parametric networks.
ISSN:1751-8822
1751-8830
DOI:10.1049/iet-smt.2020.0043