DOA Location Accuracy of a Multibeam Antenna System

1979 ◽  
Author(s):  
J. P. Braun
2013 ◽  
Vol 12 ◽  
pp. 1376-1379 ◽  
Author(s):  
Francesco Foglia Manzillo ◽  
Raffaele Nastri ◽  
Maristella Spella ◽  
Gennaro Gentile ◽  
Marco Spirito

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
N. H. Abd Rahman ◽  
M. T. Islam ◽  
N. Misran ◽  
Y. Yamada ◽  
N. Michishita

Reflector antennas have been widely used in many areas. In the implementation of parabolic reflector antenna for broadcasting satellite applications, it is essential for the spacecraft antenna to provide precise contoured beam to effectively serve the required region. For this purpose, combinations of more than one beam are required. Therefore, a tool utilizing ray tracing method is developed to calculate precise off-axis beams for multibeam antenna system. In the multibeam system, each beam will be fed from different feed positions to allow the main beam to be radiated at the exact direction on the coverage area. Thus, detailed study on caustics of a parabolic reflector antenna is performed and presented in this paper, which is to investigate the behaviour of the rays and its relation to various antenna parameters. In order to produce accurate data for the analysis, the caustic behaviours are investigated in two distinctive modes: scanning plane and transverse plane. This paper presents the detailed discussions on the derivation of the ray tracing algorithms, the establishment of the equations of caustic loci, and the verification of the method through calculation of radiation pattern.


2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Wang Zongxin ◽  
Xiang Bo ◽  
Yang Fei

A compact printable multibeam antenna array is studied in this paper. The antenna system is composed of a printed Rotman lens and an antipodal dual elliptically tapered slot antenna array; both of the two components are studied, respectively, at first, and then integrated on a single printed circuit board to make up the integrated unit of the multibeam antenna array. Measured results of all components are presented.


2018 ◽  
Vol 66 (1) ◽  
pp. 125-131 ◽  
Author(s):  
Ahmad Emadeddin ◽  
Mohammad Ali Salari ◽  
Mahdi Zoghi ◽  
Amin Darvazehban ◽  
Omid Manoochehri

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