Abstract: In order to explore more elements of triangle-grid subarray radial-line feed network, research is carried out on the 92-element subarray feed network, and a new coupling probe is designed, which can satisfy the required coupling amount and amplitude-frequency characteristics of feed network. The problem that the equal amplitude outputs of coupling amount is difficult to achieve, which is caused by the non-uniform energy in the feed network, is analyzed and solved. Experiment result indicates that: At the central frequency of 2.856, the VSWR is 1.1, the amplitude-frequency characteristics consistency of feed network output ports is good; In the frequency range of 2.76-2.92 GHz subarray, the VSWR is less than 1.5, and the amplitude-frequency characteristics of each output port is basically consistent. The experimental results are basically consistent with those of the simulation.