Five-horn digital receiving feed source

The invention relates to a five-horn digital receiving feed source which is composed of five rectangular waveguides. Wide sides are shared between the waveguides. By optimizing the sizes of the waveguides, when the four surrounding horns receive an axial level, a level value ratio and a sum beam gain value decrease are within an acceptable range, and a phase does not generate a jump within the 3dB beam width of the sum beam. Digital synthesis is completed at a back end to form a difference directional diagram. The five-horn digital receiving feed source solves problems of too low five horn digital receiving axial level and phase jump within 3dB beam width of the sum beam. 本发明涉及种五喇叭数字接收馈源，由五个矩形波导组成，其中波导之间共用宽边，通过优化波导的尺寸，实现周围四喇叭接收轴向电平时，电平值比和波束增益值下降在可接受范围内，同时相位在和波束3dB波束宽度内不产生跳变，后端通过数字合成，形成差方向图。解决了五喇叭数字接收轴向电平太低与和波束3dB波束宽度内差口接收相位跳变问题。