Analysis of parabolic and hyperbolic cylindrical reflector antennas using the method of moments

This work discusses an alternative geometrical optics (GO) technique to synthesize omnidirectional dual-reflector antennas with uniform aperture phase distribution together with an arbitrary main-beam direction for the antenna radiation pattern. Sub- and main reflectors are bodies of revolution generated by shaped curves defined by local conic sections consecutively concatenated. The shaping formulation is derived for configurations like ADC (axis-displaced Cassegrain) and ADE (axis-displaced ellipse) omnidirectional antennas. As case studies, two configurations fed by a TEM coaxial horn are designed and analyzed by a hybrid technique based on mode matching and method of moments in order to validate the GO shaping procedure.

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Application of moment method to large cylindrical reflector antennas

IRE Transactions on Antennas and Propagation ◽

10.1109/tap.1978.1141865 ◽

1978 ◽

Vol 26 (3) ◽

pp. 500-502 ◽

Cited By ~ 5

Author(s):

B. Azarbar ◽

L. Shafai

Keyword(s):

Moment Method ◽

Reflector Antennas ◽

Cylindrical Reflector

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Analysis of Arbitrary Reflector Antennas Applying the Geometrical Theory of Diffraction Together with the Master Points Technique

International Journal of Antennas and Propagation ◽

10.1155/2013/415069 ◽

2013 ◽

Vol 2013 ◽

pp. 1-13

Author(s):

María Jesús Algar ◽

Jose-Ramón Almagro ◽

Javier Moreno ◽

Lorena Lozano ◽

Felipe Cátedra

Keyword(s):

Method Of Moments ◽

Near Field ◽

Complex Geometries ◽

Geometrical Theory ◽

Reflector Antennas ◽

New Approach ◽

Sampling Points ◽

Time Requirements ◽

Geometrical Theory Of Diffraction ◽

A New Technique

An efficient approach for the analysis of surface conformed reflector antennas fed arbitrarily is presented. The near field in a large number of sampling points in the aperture of the reflector is obtained applying the Geometrical Theory of Diffraction (GTD). A new technique named Master Points has been developed to reduce the complexity of the ray-tracing computations. The combination of both GTD and Master Points reduces the time requirements of this kind of analysis. To validate the new approach, several reflectors and the effects on the radiation pattern caused by shifting the feed and introducing different obstacles have been considered concerning both simple and complex geometries. The results of these analyses have been compared with the Method of Moments (MoM) results.

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Method of moments analysis of offset-reflector antennas

Electronics Letters ◽

10.1049/el:19951325 ◽

1995 ◽

Vol 31 (22) ◽

pp. 1889-1890 ◽

Cited By ~ 2

Author(s):

D.G. Bateman ◽

A.S. Mohan ◽

S.G. Hay ◽

T.S. Bird

Keyword(s):

Method Of Moments ◽

Reflector Antennas

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Methods of Electrodynamic Modelling for Reflector Antennas

Journal of Physics Conference Series ◽

10.1088/1742-6596/2096/1/012009 ◽

2021 ◽

Vol 2096 (1) ◽

pp. 012009

Author(s):

E A Ischenko ◽

S M Fedorov ◽

I A Barannikov

Keyword(s):

Method Of Moments ◽

Hybrid Method ◽

Integration Method ◽

Scattering Matrix ◽

Reflector Antenna ◽

Performance Comparison ◽

Reflector Antennas ◽

Electromagnetic Characteristics ◽

Antenna Characteristics ◽

A Performance

Abstract The article discusses methods for calculating the electromagnetic characteristics of reflector antennas based on the finite integration method, the method of moments, and the hybrid method. In the course of the study, a performance comparison of these methods in the process of calculating the reflector antenna characteristics was made. Comparison of the calculation efficiency was carried out using four computing devices. On the basis of the calculations, the graphs of the scattering matrix and the directional diagrams of the antenna under study were obtained

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