A method using focal plane analysis to determine the performance of reflector antennas

Cramer, P. W.; Imbriale, W.; Rengarajan, S.R.

doi:10.1049/cp:19970209

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…Introducing (7) into (8), the far field pattern, with rigid body displacement and increment in focal length acting on the reflector, can be rewritten as follows [6]:…”

Section: Inversion Model For Distorted Reflectormentioning

confidence: 99%

“…Introducing (19) into (8), the far field pattern under the influence of feed installation error can be described as follows…”

Section: Inversion Model For Feed Installation Errormentioning

confidence: 99%

“…[3][4][5]. Thus, surface distortion analysis and its influence on electrical properties are the areas of interest [6][7][8][9][10][11]. Once the distortions are known, various techniques can be used to compensate for the effect of distortion on the antenna pattern and enhance the overall antenna performance [12].…”

Section: Introductionmentioning

confidence: 99%

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Feed adjustment method of reflector antenna based on far field

Lian

Wang

2014

IET Microwaves, Antennas & Propagation

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To improve the electrical properties of a reflector antenna, the reflector surface distortion is compensated to some extent and the feed installation error is reduced by adjusting the feed position based on far field. Considering the fact that the traditional method of best‐fit paraboloid needs to obtain the accurate reflector deformation beforehand, a novel method to determine feed adjustment amounts based on far field is proposed, with no need to know the deformation. Based on aperture field method, explicit expressions of the sensitivity of far field to fitting parameters of the distorted reflector are established. Then fitting parameters and far field are linked with over‐determined linear equations, and by measuring far field, the reflector deformation is approximately calculated based on least square method thereby providing guidance for the feed adjustment of the deformed reflector. In addition, the proposed method is also employed to determine the feed installation error, which is adopted instead of fitting parameters to describe the aperture phase error. Simulation cases show the correctness of the proposed method and the validity of the compensation of reflector distortion and the accurate installation of the feed.

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“…Introducing (7) into (8), the far field pattern, with rigid body displacement and increment in focal length acting on the reflector, can be rewritten as follows [6]:…”

Section: Inversion Model For Distorted Reflectormentioning

confidence: 99%

“…Introducing (19) into (8), the far field pattern under the influence of feed installation error can be described as follows…”

Section: Inversion Model For Feed Installation Errormentioning

confidence: 99%