TM010 module low loss high-selectivity cavity filter

The utility model relates to a TM010 mode low loss high selectivity cavity filter, comprising a metal body, a cover plate, a harmonic resonance frequency adjustment screw, a couple intensity adjustment screw, an input interface and an output interface; wherein, the body comprises at least two cylindrical resonant cavities, the resonant cavities are numbered in sequence, a centralized type couple window is arranged between the two near resonant cavities, the harmonic resonance frequency adjustment screw and the couple intensity adjustment screw are fixed on the cover plate and extend to the resonant cavity and the centralized type couple window respectively, the input interface and the output interface are connected with a front and a rear resonant cavities respectively. The selectivity cavity filter is characterized in that the cylindrical wave-guide cavity technique is adopted to make the propagation of the electromagnetic field centralize in an enclosed conductor for a high Q value and a low loss, a plurali