Manufacturing method of multi-channel feed source and monopulse Cassegrain antenna integrated with feed source

The invention discloses a manufacturing method of a multi-channel feed source and a monopulse Cassegrain antenna of an integrated feed source, the multi-channel feed source is manufactured through offset-focus constraint of a main reflecting surface and an auxiliary reflecting surface, the multi-channel feed source comprises a central channel and a plurality of offset-focus channels, and the periphery of the central channel is surrounded by the plurality of offset-focus channels. The multi-channel feed source can be designed and the overall radial size of the multi-channel feed source can be maximized based on the offset-focus constraint of the main reflecting surface and the auxiliary reflecting surface, and the single-pulse Cassegrain antenna of the integrated feed source formed by combining the main reflecting surface, the auxiliary reflecting surface and the multi-channel feed source is small in axial size, high in gain and higher in structural reliability, and can be applied to the multi-channel feed sou