NDLI: FDTD analysis of patch antennas on high dielectric-constant substrates surrounded by a soft-and-hard surface

Content Provider	IEEE Xplore Digital Library
Author	RongLin Li DeJean, G. Tentzeris, M.M. Papapolymerou, J. Laskar, J.
Copyright Year	1965
Abstract	The surface-wave diffraction at the edge of a finite-size substrate with a high dielectric constant is the dominant mechanism affecting the radiation pattern of a patch antenna fabricated on this material. A soft-and-hard surface (SHS) can be used to block the surface waves from propagating outward along the dielectric substrate, thus reducing the unwanted diffraction. Patch antennas surrounded by the SHS are analyzed using the finite-difference time-domain (FDTD) technique that implements the SHS boundary conditions using a simple modified subcell model. A square stacked-patch antenna and a circularly polarized (CP) patch antenna on a thick LTCC multilayer substrate are investigated. It is shown that the radiation pattern of the square patch on a big-size substrate can be significantly improved using SHS while the backward radiation level of the CP antenna with SHS on a small-size substrate is considerably reduced.
Sponsorship	IEEE Magnetics Society
Starting Page	1444
Ending Page	1447
Page Count	4
File Size	293536
File Format	PDF
ISSN	00189464
Volume Number	40
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dielectric substrates Finite difference methods Time domain analysis Patch antennas Diffraction Antenna radiation patterns Surface waves High-K gate dielectrics Dielectric materials Boundary conditions
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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