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本文利用卡塞格伦天线辐射方向图理论分析之结果,讨论了最近由CCIR(国际无线电通信咨询委员会)提出的可应用于 D/λ>150的地面站天线的最大容许旁瓣电平要求,(D 为主反射器的直径)。此外,还考虑了较小天线的要求,并提出 D/λ<150时可能的旁瓣电平响应,虽然该分析明确地研究了轴对称结构,但其结果也适用于偏置几何结构的辐射特性。这就容许在必要时采用编置结构。
In this paper, based on the results of the theoretical analysis of the Cassegrain antenna radiation pattern, the requirements of the maximum allowable sidelobe level recently proposed by the CCIR (International Radiocommunication Advisory Committee) for a terrestrial antenna with D / λ> 150 are discussed. (D is the diameter of the main reflector). In addition, the requirement of smaller antennas is also considered and a possible sidelobe level response at D / λ <150 is proposed. Although this analysis explicitly studies the axisymmetric structure, the result is also valid for biasing the geometry of the radiation characteristic. This allows for the use of a knit structure when necessary.