Broadband antenna calibration network based on multilayer coupling technology

The invention discloses a broadband antenna calibration network based on a multi-layer coupling technology, and the network comprises a power division layer which comprises a one-to-four-path power division network of a banded structure, and the one-to-four-path power division network comprises three two-stage Wilkinson power dividers; the coupling layer comprises 16 groups of coupling grooves, and each group of coupling grooves is composed of a first coupling groove, two second coupling grooves and two third coupling grooves; and the feeder line layer comprises two groups of feeder lines which are centrosymmetric about the center, and each group of feeder lines comprises eight bent transmission channels. A one-to-four-path power division network formed by broadband two-stage Wilkinson power dividers is adopted for power layering, the power distribution effect is good, and isolation is high; in addition, the coupling layer adopts a multi-slot form, so that the flat and adjustable weak coupling characteristic