The present invention, miniaturization, and provide a low loss and high attenuation peak, by optimizing the design process and free from design limitations in accordance with the design of the dielectric constant provides a microstrip cross-coupled band-pass filter that can reduce the manufacturing cost. ; Microstrip cross-coupled band-pass filter according to the present invention, the cross-linking distance between the between the input and the electric field coupled type resonator and the output terminal and the electric field coupling the output resonator magnetic field coupling and the input resonator and the output resonator magnetic coupling a gap is formed. In addition to the input terminal and the output terminal and the connection lines to be crossed complex electric field coupling it is further included. ; Here, the cross-linking gap is a gap for generating an attenuation pole on the upper side of the pass band characteristics, it can be the attenuation of the attenuation pole frequency changes according to the interval of the change in the cross-linking gap. In addition, it generates an attenuation pole characteristic at the upper side and the lower side of the cross is the pass band to the connection lines, intersecting the coupled transmission line system and the distance between said input and output terminals, can be varied is the frequency of the attenuation pole in accordance with the length and width of the deadlock engagement seam. ; Band-pass filter, micro-streams, cross-linking, an attenuation pole, frequency attenuation
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