NDLI: An FDTD/MoMTD hybrid technique for modeling HF antennas located on lossy ground

Content Provider	IEEE Xplore Digital Library
Author	Zhou Bo Lou Jiangdong Tu Zhen Xing Feng
Copyright Year	2008
Description	Author affiliation: PLA Inf. Eng. Univ., Zhengzhou (Zhou Bo; Lou Jiangdong; Tu Zhen; Xing Feng)
Abstract	For high frequency wave(2~30 MHz),calculating the current distribute and radiation pattern for antennas is a complex problem because of the interaction between the antenna, the ground, and any buried wire net. Typically, the finite-difference time-domain (FDTD) technique is well suited for modeling fields in heterogeneous media; the method of moments (MoM) is well suited for modeling complex antennas in free space. This paper introduces a hybrid technique, based upon the equivalence principle, and decomposes the problem of antennas located on ground into two coupled equivalent problems: one for the antenna geometry and the other for the ground geometry, with field information passing between them via a rapidly converging iterative procedure. The fields in each region may be modeled using numerical techniques best suited to them. Results for several test cases are presented, using FDTD to model the environment problem and MoM for the antenna problem, which demonstrates the accuracy of this hybrid technique.
Starting Page	726
Ending Page	729
File Size	416247
Page Count	4
File Format	PDF
ISBN	9781424418794
DOI	10.1109/ICMMT.2008.4540498
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite difference methods Time domain analysis Hafnium Information geometry Frequency Antenna radiation patterns Wire Nonhomogeneous media Moment methods Numerical models Hybrid Method HF antenna MoMTD FDTD
Content Type	Text
Resource Type	Article

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