NDLI: Elliptical beam closed-form dual-reflector antenna efficiently illuminated by a feed with an axially-symmetric radiation pattern

Content Provider	IEEE Xplore Digital Library
Author	Brown, K.W. Prata Jr., A.
Copyright Year	1995
Description	Author affiliation: Adv. Electromagn. Technol., Hughes Aircraft Co., Rancho Cucamonga, CA, USA (Brown, K.W.)
Abstract	A dual-reflector antenna geometry is presented for allowing a quasi-elliptical aperture main reflector to be efficiently illuminated by an feed that radiates an axially symmetric pattern. The geometry works very well for apertures with axial ratios of 2:1 or less. The design is accomplished by the following steps. First, a subreflector surface is chosen that will spread the axially symmetric radiated energy from the feed unsymmetrically to the main reflector. Second, the main reflector surface is found, in closed form, from the law of equal optical path length. Third, a design procedure is developed that allows the user to find the sub and main reflector surfaces from basic input parameters such as the desired aperture and feed characteristics. Finally, a design example is presented to demonstrate the capability of the proposed geometry.
Starting Page	877
Ending Page	880
File Size	269812
Page Count	4
File Format	PDF
ISBN	0780327195
DOI	10.1109/APS.1995.530157
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-18
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna feeds Aperture antennas Equations Geometrical optics Geometry Ellipsoids Antenna radiation patterns Aircraft propulsion Reflector antennas
Content Type	Text
Resource Type	Article

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