Diakoptics and Wideband Dispersive Absorbing Boundaries in the 3-D TLM Method with Symmetrical Condensed Nodes
Summary :
The Diakoptics (Segmentation) procedure and its application to wideband dispersive absorbing boundary conditions have been implemented in the 3-D TLM method with symmetrical condensed nodes. We show how a microwave structure can be partitioned into substructures which are solved independently and later reassembled, all in the time domain. Frequency dispersive non-TEM boundaries are represented in the time domain by their characteristic impulse response or Johns Matrix. Parasitic reflections due to finite space and time discretization steps have been reduced to less than one percent by exponentially tapering the impulse response of frequency dispersive boundaries, allowing wideband S-parameter extraction from a single impulsive TLM simulation. The S-parameters of some 3-D waveguide discontinuities computed with this technique compare well with the available data.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E74-C No.5 pp.1242-1250
- Publication Date
- 1991/05/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Issue on the 3rd Asia-Pacific Microwave Conference)
- Category
- Transmission Lines and Waveguides
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ESWARAPPA, Wolfgang J. R. HOEFER, "Diakoptics and Wideband Dispersive Absorbing Boundaries in the 3-D TLM Method with Symmetrical Condensed Nodes" in IEICE TRANSACTIONS on Electronics,
vol. E74-C, no. 5, pp. 1242-1250, May 1991, doi: .
Abstract: The Diakoptics (Segmentation) procedure and its application to wideband dispersive absorbing boundary conditions have been implemented in the 3-D TLM method with symmetrical condensed nodes. We show how a microwave structure can be partitioned into substructures which are solved independently and later reassembled, all in the time domain. Frequency dispersive non-TEM boundaries are represented in the time domain by their characteristic impulse response or Johns Matrix. Parasitic reflections due to finite space and time discretization steps have been reduced to less than one percent by exponentially tapering the impulse response of frequency dispersive boundaries, allowing wideband S-parameter extraction from a single impulsive TLM simulation. The S-parameters of some 3-D waveguide discontinuities computed with this technique compare well with the available data.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e74-c_5_1242/_p
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@ARTICLE{e74-c_5_1242,
author={ESWARAPPA, Wolfgang J. R. HOEFER, },
journal={IEICE TRANSACTIONS on Electronics},
title={Diakoptics and Wideband Dispersive Absorbing Boundaries in the 3-D TLM Method with Symmetrical Condensed Nodes},
year={1991},
volume={E74-C},
number={5},
pages={1242-1250},
abstract={The Diakoptics (Segmentation) procedure and its application to wideband dispersive absorbing boundary conditions have been implemented in the 3-D TLM method with symmetrical condensed nodes. We show how a microwave structure can be partitioned into substructures which are solved independently and later reassembled, all in the time domain. Frequency dispersive non-TEM boundaries are represented in the time domain by their characteristic impulse response or Johns Matrix. Parasitic reflections due to finite space and time discretization steps have been reduced to less than one percent by exponentially tapering the impulse response of frequency dispersive boundaries, allowing wideband S-parameter extraction from a single impulsive TLM simulation. The S-parameters of some 3-D waveguide discontinuities computed with this technique compare well with the available data.},
keywords={},
doi={},
ISSN={},
month={May},}
Copy
TY - JOUR
TI - Diakoptics and Wideband Dispersive Absorbing Boundaries in the 3-D TLM Method with Symmetrical Condensed Nodes
T2 - IEICE TRANSACTIONS on Electronics
SP - 1242
EP - 1250
AU - ESWARAPPA
AU - Wolfgang J. R. HOEFER
PY - 1991
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E74-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 1991
AB - The Diakoptics (Segmentation) procedure and its application to wideband dispersive absorbing boundary conditions have been implemented in the 3-D TLM method with symmetrical condensed nodes. We show how a microwave structure can be partitioned into substructures which are solved independently and later reassembled, all in the time domain. Frequency dispersive non-TEM boundaries are represented in the time domain by their characteristic impulse response or Johns Matrix. Parasitic reflections due to finite space and time discretization steps have been reduced to less than one percent by exponentially tapering the impulse response of frequency dispersive boundaries, allowing wideband S-parameter extraction from a single impulsive TLM simulation. The S-parameters of some 3-D waveguide discontinuities computed with this technique compare well with the available data.
ER -
English
