An array-fed, dual-reflector antenna system (of offset, confocal paraboloids) for satellite antenna applications

2003 ◽  
Author(s):  
E.P. Ekelman ◽  
B.S. Lee
Keyword(s):  
Reflector Antenna ◽  
Antenna System ◽  
Satellite Antenna ◽  
Dual Reflector Antenna

CROSS-POLARIZATION OF DUAL-REFLECTOR ANTENNA

2021 ◽  
Author(s):  
А.П. ВОРОНЦОВ ◽  
К.М. ВОЛГАТКИН ◽  
С.В. ЕРМОЛАЕВ ◽  
И.Н. ПРИЩЕПА
Keyword(s):  
Polarization Vector ◽  
Reflector Antenna ◽  
Antenna System ◽  
Sufficient Condition ◽  
Cross Polarization ◽  
Necessary And Sufficient Condition ◽  
Reflector Antennas ◽  
Single Polarization ◽  
Dual Reflector Antenna ◽  
Necessary And Sufficient

Рассмотрен вопрос расчета кроссполяризации двухзеркальных антенн с вынесенным облучателем и использованием комплексных координат. Приведено необходимое и достаточное условие для нулевого уровня кроссполяризации в апертуре рефлектора. Дан пример расчета тангенса угла наклона единичного вектора поляризации в апертуре рефлектора двухзеркальной антенной системы типа Кассегрена. The problem of calculating the cross-polarization of dual-reflector antennas with offset feed using complex coordinates is considered. A necessary and sufficient condition for the zero level of cross-polarization in the reflector aperture is given. The example of calculating the tangent of the angle of slope of a single polarization vector in the aperture of a reflector of a Cassegrain-type dual-reflector antenna system is presented.

scholarly journals Ray tracing technique for shaping a dual reflector antenna system

2016 ◽  
Vol 24 ◽  
pp. 1223-1234 ◽  
Author(s):  
Md. Rezwanul AHSAN ◽  
Mohammad Tariqul ISLAM ◽  
Yoshihide YAMADA ◽  
Norbahiah MISRAN
Keyword(s):  
Ray Tracing ◽  
Reflector Antenna ◽  
Antenna System ◽  
Dual Reflector Antenna

Challenges in the EM-based design of modern telecommunication satellite antennas

2018 ◽  
Vol 37 (4) ◽  
pp. 1461-1480
Author(s):  
Enrico Reiche ◽  
Michael Schneider
Keyword(s):  
High Power ◽  
Antenna System ◽  
System Level ◽  
Efficient Design ◽  
Design Issues ◽  
Satellite Antenna ◽  
Content Type ◽  
Telecommunication Satellite ◽  
Em Field ◽  
Satellite Antennas

Purpose This paper aims to introduce design challenges of modern telecommunication satellite antennas. The antenna farms accommodated on a satellite are systems of high complexity. From the radio frequency (RF) point of view, the most important design issues, e.g. high power applications in space (vacuum) or typical antenna scenarios (single/multi beam antennas), and their solution are considered. Design/methodology/approach The paper presents the application of electro-magnetic (EM) field simulation in the design and optimisation process. The design of a telecommunications satellite antenna splits into several areas, for which different types of EM field solvers are used. Findings The use of EM field solvers enables an accurate and efficient design approach of modern geostationary telecommunications satellite antennas. Due to the use of EM field solvers, an excellent agreement between predictions and measurement results on feed as well as antenna system level is achieved. Originality/value This paper gives an overview of state-of-the-art telecommunications satellite antenna architectures and their efficient RF design due to the use of EM field solvers. Typical high power effects and other design issues are explained. RF engineers are encouraged to work on this exciting topic to further improve the design process and to develop new satellite antenna and feed products.

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