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抛物面反射器的表面精度是衡量天线制造水平的重要指标,也是影响天线增益的主要因素。在相同口径及相同表面精度条件下,工作频率愈高,表面误差对天线的增益影响愈明显。随着更高频率的开发及启用,对反射器表面制造精度的要求也不断提高。在实际设计中,我们可以由给定的增益折减系数来分配反射器表面误差值并提供制造、检验依据,采用
Parabolic reflector surface accuracy is an important measure of the antenna manufacturing level, but also affect the antenna gain of the main factors. Under the same aperture and the same surface precision, the higher the operating frequency, the more obvious the influence of the surface error on the antenna gain. With the development and application of higher frequencies, the requirements on the precision of the reflector surface are also constantly increasing. In practical design, we can assign the reflector surface error value from given gain reduction factor and provide the basis for manufacturing and testing.