NDLI: Flat antennas for satellite terminals with tapered aperture for interference control

Content Provider	IEEE Xplore Digital Library
Author	Zaghloul, A.I. Kohls, E.C. Kilic, O.
Copyright Year	2002
Description	Author affiliation: Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA (Zaghloul, A.I.)
Abstract	This paper describes a low-cost flat plate antenna that is designed to control the levels of interference from adjacent systems. The interference directions and frequencies are preset and their power levels are assumed to be bounded. A tapered amplitude and/or phase distribution across the aperture is built into the power distribution (feed network) layer of the multilayer printed circuit structure to impose nulls or low sidelobe levels in the antenna radiation pattern in the directions of the interferers. To minimize the complexity of the feed network layout, the array may be divided into identical modules or sub-arrays, each with uniform aperture distribution. The tapered distribution is applied between the sub-arrays, thus creating a quantized or stair step feeding of the modules or the sub-arrays. In general, the tapered distribution is two dimensional. However, for adjacent geostationary satellite interference, only a one-dimensional taper in the plane parallel to the orbital arc is needed. The radiation pattern discrimination in the direction of the interferers, and consequently the type of taper, depend on the link budget requirements. The taper can be Taylor, Tchebychev or any other distribution that satisfy the pattern requirements.
Starting Page	256
Ending Page	259
File Size	156835
Page Count	4
File Format	PDF
ISBN	0780373308
DOI	10.1109/APS.2002.1016074
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Aperture antennas Satellite antennas Interference Feeds Antenna radiation patterns Control systems Frequency Power distribution Nonhomogeneous media Printed circuits
Content Type	Text
Resource Type	Article

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