Models of Small Microwave Devices in FDTD Simulation

Qing-Xin CHU; Xiao-Juan HU; Kam-Tai CHAN

Models of Small Microwave Devices in FDTD Simulation

Qing-Xin CHU, Xiao-Juan HU, Kam-Tai CHAN

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In the FDTD simulation of microwave circuits, a device in very small size compared with the wavelength is often handled as a lumped element, but it may still occupy more than one cell instead of a wire structure without volume routinely employed in classical extended FDTD algorithms. In this paper, two modified extended FDTD algorithms incorporating a lumped element occupying more than one cell are developed directly from the integral form of Maxwell's equations based on the assumption whether displacement current exists inside the region where a device is present. If the displacement current exists, the modified extended FDTD algorithm can be represented as a Norton equivalent current-source circuit, or otherwise as a Thevenin equivalent voltage-source circuit. These algorithms are applied in the microwave line loaded by a lumped resistor and an active antenna to illustrated the efficiency and difference of the two algorithms.

Publication: IEICE TRANSACTIONS on Electronics Vol.E86-C No.2 pp.120-125

Publication Date: 2003/02/01

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Type of Manuscript: Special Section INVITED PAPER (Special Issue on Circuit and Device Technology for High-Speed Wireless Communication)

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Qing-Xin CHU, Xiao-Juan HU, Kam-Tai CHAN, "Models of Small Microwave Devices in FDTD Simulation" in IEICE TRANSACTIONS on Electronics, vol. E86-C, no. 2, pp. 120-125, February 2003, doi: .
Abstract: In the FDTD simulation of microwave circuits, a device in very small size compared with the wavelength is often handled as a lumped element, but it may still occupy more than one cell instead of a wire structure without volume routinely employed in classical extended FDTD algorithms. In this paper, two modified extended FDTD algorithms incorporating a lumped element occupying more than one cell are developed directly from the integral form of Maxwell's equations based on the assumption whether displacement current exists inside the region where a device is present. If the displacement current exists, the modified extended FDTD algorithm can be represented as a Norton equivalent current-source circuit, or otherwise as a Thevenin equivalent voltage-source circuit. These algorithms are applied in the microwave line loaded by a lumped resistor and an active antenna to illustrated the efficiency and difference of the two algorithms.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e86-c_2_120/_p

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@ARTICLE{e86-c_2_120,
author={Qing-Xin CHU, Xiao-Juan HU, Kam-Tai CHAN, },
journal={IEICE TRANSACTIONS on Electronics},
title={Models of Small Microwave Devices in FDTD Simulation},
year={2003},
volume={E86-C},
number={2},
pages={120-125},
abstract={In the FDTD simulation of microwave circuits, a device in very small size compared with the wavelength is often handled as a lumped element, but it may still occupy more than one cell instead of a wire structure without volume routinely employed in classical extended FDTD algorithms. In this paper, two modified extended FDTD algorithms incorporating a lumped element occupying more than one cell are developed directly from the integral form of Maxwell's equations based on the assumption whether displacement current exists inside the region where a device is present. If the displacement current exists, the modified extended FDTD algorithm can be represented as a Norton equivalent current-source circuit, or otherwise as a Thevenin equivalent voltage-source circuit. These algorithms are applied in the microwave line loaded by a lumped resistor and an active antenna to illustrated the efficiency and difference of the two algorithms.},
keywords={},
doi={},
ISSN={},
month={February},}

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TY - JOUR
TI - Models of Small Microwave Devices in FDTD Simulation
T2 - IEICE TRANSACTIONS on Electronics
SP - 120
EP - 125
AU - Qing-Xin CHU
AU - Xiao-Juan HU
AU - Kam-Tai CHAN
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E86-C
IS - 2
JA - IEICE TRANSACTIONS on Electronics
Y1 - February 2003
AB - In the FDTD simulation of microwave circuits, a device in very small size compared with the wavelength is often handled as a lumped element, but it may still occupy more than one cell instead of a wire structure without volume routinely employed in classical extended FDTD algorithms. In this paper, two modified extended FDTD algorithms incorporating a lumped element occupying more than one cell are developed directly from the integral form of Maxwell's equations based on the assumption whether displacement current exists inside the region where a device is present. If the displacement current exists, the modified extended FDTD algorithm can be represented as a Norton equivalent current-source circuit, or otherwise as a Thevenin equivalent voltage-source circuit. These algorithms are applied in the microwave line loaded by a lumped resistor and an active antenna to illustrated the efficiency and difference of the two algorithms.
ER -