Antenna with shared sources and process for manufacturing multi-beam antenna with shared sources
一种多波束、馈源的技术,应用在卫星远程通信领域,能够解决强像差等问题
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[0035] The antenna structure according to the invention must allow the transmission of information to terminals of very small size. The size of the target terminal dictates the values that the antenna parameters must have, such as the ratio G / T of gain and noise temperature, called the figure of merit, and the equivalent isotropic radiated power (EIRP). For a given geographical coverage and a given frequency, the G / T parameter directly depends on the number of beams to be generated. Therefore, a fixed frequency band and G / T value has a corresponding number of beams and required beam size to produce a given coverage. figure 1 An example of the coverage obtained with a configuration of 43 spots 30 corresponding to a beam angle θ equal to 0.5° is shown. To produce optimal coverage, all points must be contiguous, or even interleaved, and the gain of the antenna must be optimized to correspond to each intersection between three points in the case of a triangular or hexagonal gri...
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