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This study investigates the use of novel manufacturing technologies for space antenna feed chain systems. A comparison between conventional and advanced manufacturing technologies concerning the radio-frequency (RF) performance was made, in order to derive design rules for the novel manufacturing technology. Waveguide runs as well as feed chain components were redesigned by using these design rules...
To illuminate a certain footprint on Earth, a corresponding aperture distribution of the antenna in space needs to be generated. There are various possibilities to generate this distribution. A general classification is for example the distinction between direct radiation and radiation via reflecting apertures. The way in which the illumination is realised is directly linked to the complexity of the...
This paper describes the use of additive manufacturing to realise satellite feed chain and other waveguide components. The advantages and drawbacks of different processes are discussed and examples of components and their performance are presented. A number of the presented components exploit the inherent geometric freedom of additive manufacturing. The near term outlook and ongoing development activities...
This paper investigates the use of additive layer manufacturing (ALM) for waveguide components based on two Ku-band sidearm orthomode transducers (OMT). The advantages and disadvantages of the ALM manufacturing regarding RF waveguide components are discussed and measurement results are compared to those of an equal OMT manufactured by conventional techniques. The paper concludes with an outlook to...
Future generation telecommunication satellites need a payload with many communication channels as well as an increased transmit power per channel. Flexibility due to frequency and polarisation allocation and increased communication capacity are required. This paper presents a summary of the latest developments in modular high power Ku-band Polarisation Devices (PDs) at AIRBUS DS GmbH. It covers two...
In this paper we report on design and qualification of two types of compact dual circularly polarised K/Ka-band feed chains for multi-spot single feed per beam applications. The presented feed products were developed to engineering qualification model (EQM) standard in the frame of ESA ARTES 3–4 and can be applied for user beam as well as gateway communication. Additionally one type of feed chain...
Recent results on active multifeed Ka-band developments for satellite communication are presented. Basically, the active multifeed system is an array-fed, single-offset reflector antenna. The antenna array is fed by an active microstrip beamforming network based on a low temperature cofired ceramics substrate with monolithic microwave integrated circuit based phase and amplitude actuators. In this...
This paper describes the performance and test results achieved for a passive multiple spot beam satellite antenna with overlapping beams in Ka-band. The antenna had been designed, manufactured and tested in the frame of the DLR granted R&D program "Medusa". S-parameter and pattern test results on BFN, feed array and antenna level are presented and compared to the performance predictions.
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