New technique for beam steering with fixed parabolic reflectors

Rudge, A. W.; Withers, Matt

doi:10.1049/piee.1971.0166

Cited by 42 publications

(14 citation statements)

References 2 publications

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“…The ray bundle has a crossover 1-2 between caustic and boundary rays. Its dimension p depends on β, L, and f/D [2]. If the angle β varies, the crossover moves along the "scan curve" [2,5] which is the circle (Fig.…”

Section: Go Theory Of the Antennamentioning

confidence: 99%

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Asymptotic theory, design and efficiency of array-fed reflector antennas

Shishlov

Vilenko

Krivosheev

2013

2013 IEEE International Symposium on Phased Array Systems and Technology

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Asymptotic theory based on geometrical optics and physical optics is developed for 3D array-fed reflector antenna with an offset parabolic reflector. Relationships between parameters of the antenna structure and its performances are presented. Procedures of a feed array design and a cluster design are described. Radiation performances are simulated and discussed. Quality of the antenna with electrical beam steering is considered in terms of aperture efficiency and element use efficiency. Quality of the antenna with a contoured beam or multiple beams is proposed to describe in terms of coverage efficiency.

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Section: Go Theory Of the Antennamentioning

confidence: 99%

“…Early works on array-fed reflector antennas were implemented several tens of years ago in USA, United Kingdom and USSR, for example [1][2][3][4][5]. Afterwards, many constructions and models of array-fed reflector antennas and their parts as well as simulation procedures based on numerical algorithms were described in papers and books.…”

Section: Introductionmentioning

confidence: 99%

Asymptotic theory, design and efficiency of array-fed reflector antennas

Shishlov

Vilenko

Krivosheev

2013

2013 IEEE International Symposium on Phased Array Systems and Technology

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“…The coma aberration caused by translating a single feed element from the focal point of a parabolic reflector can be compensated for through the use of a feed array [3,4]. A hybrid antenna, an arrayfed reflector configuration, can improve scanning characteristics by adjusting the elements' phases and amplitudes [5,6].…”

Section: Introductionmentioning

confidence: 99%

“…. , N) given by (3) will have the same value as (0,0,1), and then, according to (4), f k will obtain its minimum, i.e., zero.…”

mentioning

confidence: 99%

A Novel Shaping Design Technique for the Reflector in Hybrid Antennas

Liu¹,

Jiao²,

Zhang³

2005

Journal of Electromagnetic Waves and Applications

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A new reflector shaping technique to improve the beam scanning capability of hybrid antennas (i.e., a reflector system illuminated by a phased array) is presented. Errors between the desired scan directions and the outgoing rays' directions in the scanning range are minimized by adjusting the reflector shape. This technique can be used to decrease the active element number of the feed array during the antenna scans, or reduce the gain loss caused by beam scanning when the number of active elements is given. An offset reflector antenna system is designed and analyzed, through which the validity of the technique is demonstrated.

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“…This fact has been used with considerable success in the development of corrugated feeds, for example [lo], [12]. Rudge has also applied this approach to the design of an array feed for a beam-scanning paraboloid, where the feed aperture fields are synthesized to match the focal region fieIds on a given surface [13].…”

Section: Introductionmentioning

confidence: 99%

Determination of the maximum scan-gain contours of a beam-scanning paraboloid and their relation to the Petzval surface

Rusch

Ludwig

1973

IEEE Trans. Antennas Propagat.

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The scan-plane fields in the focal region of a beamscanning paraboloid are determined from physical optics. Amplitude and phase contours are presented, and comparisons are made with the geometrical-optics results. Contours for maximtm scan-gain are determined as a function of F / D and illumination taper and compared with the Petzval d a c e . Unless the F / D is very large or spillover is excessive, a higher scan gain is achieved when the axis of a directional feed is parallel to the axis of the reflector than when the feed is directed toward the vertex. The contour of maximum Sean-gain is a function of both illumination taper and F / D . In general, larger F / D values tend to have a maximum-gain contour close to the focal plane, w!de the smaller P / D values tend to have a maximum-gain contour closer to the Petzval surface. Increasing the illumination taper moves the maximum-gain contour closer to the Petzval surface. Normalized maximum-gain contours are presented as a function of beamwidths of scan. The frequency dependence of these results is discussed.

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New technique for beam steering with fixed parabolic reflectors

Cited by 42 publications

References 2 publications

Asymptotic theory, design and efficiency of array-fed reflector antennas

Asymptotic theory, design and efficiency of array-fed reflector antennas

A Novel Shaping Design Technique for the Reflector in Hybrid Antennas

Determination of the maximum scan-gain contours of a beam-scanning paraboloid and their relation to the Petzval surface

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