E-band low-loss EBG multilayer integrated band-pass filter

The invention relates to the technical field of radio frequency, and discloses an E-band low-loss EBG multilayer integrated band-pass filter. The filter comprises a three-dimensional structure formedby laminating a plurality of layers of electromagnetic band gap structure unit patches of two-dimensional structures, wherein a gap is formed between every two adjacent electromagnetic band gap structure unit patches, ad a coupling hole is formed in the center of each electromagnetic band gap structure unit patch, and the size of each coupling hole is gradually changed in the laminating direction.According to the technical scheme provided by the invention, the three-dimensional cavity structure is realized by adopting a gradual change type electromagnetic band gap structure unit patch laminated structure; compared with a traditional cavity filter, the filter is easier to process, saves the cost, and solves the problem of low processing precision; according to the technical scheme, while the band-pass filter is ach