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本文根据矩形波导中隔片式圆极化器传输波型的渐变过程,导出了圆极化馈源的辐射场公式,并利用R.Mittra等作者提出的物理光学辐射积分Jacobi-Bessel级数展开方法对偏置抛物面天线圆极化版图成形波束的工程理论进行了研究。它包括:圆极化馈源辐射场公式;偏置抛物面电流“等效投影孔径”布分;二次辐射场计算公式;版图成形波束等效各向同性辐射功率(EIRP)工程计算公式;天线坐标、版图经纬度坐标与卫星坐标之间的变换关系;给出了七元馈源阵成形的我国西部版图圆极化波束的数值结果,其EIRP等电平曲线是计算机自动打印的,本文研究的理论方法可作为研制版图成形波束天线各阶段的基本分析工具。
In this paper, we deduce the formula of the radiation field of a circularly polarized feed based on the gradual transition of the transmission mode of the spacer circular polarizer in a rectangular waveguide. By using the Jacobi-Bessel series expansion of the physical optical radiation integrality proposed by R. Mittra et al. Methods The engineering theory of circularly polarized beams for bias parabolic antennas is studied. It includes: Circular polarization feed radiation field formula; Offset parabolic current “equivalent projection aperture” distribution; Second radiation field calculation formula; Layout shaping beam equivalent isotropic radiant power (EIRP) engineering formula; Antenna Coordinate, latitude and longitude coordinates of the map and satellite coordinates. The numerical results of circularly polarized beams of a seven-element feed array in western China are given. The EIRP equal-level curves are automatically printed by computer. In this paper, The theoretical method can be used as a basic analysis tool for the development of all stages of the formed beam antenna.