Design and Analysis of A Flexible and Repackable Feedline Structure with Integrated Branches
The feeder system is mainly used for transmitting control and distributing RF signals.Currently,the feeder structure is mainly distributed in a single channel,which occupies a lot of space in the antenna box and is not conducive to integrated design in the antenna box area.In addition,waveguide repair is difficult.This article proposes a feeder structure that can be flexibly repaired through branch integration.By integrating the elevation angle branch,side angle branch,and sum path branch of the feeder,all distributed on the same side of the box,a three-way integrated layout can be achieved,occupying a small space.At the same time,parallel straight waveguides are arranged in the middle of each branch,and independent phase adjustment is achieved by adding or removing straight waveguides or waveguide pads,achieving flexible repair.Finally,mechanical simulation and vibration tests were conducted on the feeder structure,and the results showed that the feeder structure meets the vibration requirements.The design method of feeder structure involved in this article can provide reference for the integration and miniaturization design of feeder structure.