Line tree antenna and design method thereof

The invention relates to a branch tree antenna and a design method thereof, and is characterized in that on one hand, a radiation patch is based on a fractal geometry idea, a tree root patch and a tree branch patch are provided, a fractal tree structure is constructed on a plane, the total perimeter of the antenna can be increased, the size of the antenna is greatly reduced, and the manufacturing cost is reduced; and on the other hand, a new thought of changing the displacement distance of each patch is provided, so that each stage of tree branch patch is displaced outwards for a certain distance, broadband resonance can be formed through a plurality of resonance points, and resonance meeting the requirement can be generated by shifting and adjusting the displacement distance through branches with the same or different sizes. By adjusting the performance indexes of the antenna, especially the opposite direction arrangement and the equal size design of the tree root patches, compared with the mode of changing