Novel high-frequency cavity filter

The invention discloses a novel high-frequency cavity filter. The novel high-frequency cavity filter comprises a chip and a base plate, wherein the chip is arranged on the base plate in an inverted mode, and the chip is arranged on the base plate through a welding device. A preparation process of the filter comprises the following steps that the chip is clamped on the base plate in an inverted mode, then base plate provided with the chip is arranged on a first clamp, and the first clamp clamps the base plate provided with the chip; starting is carried out by controlling the interval work of adriving motor, so that a supporting column is driven to rotate through a driving belt wheel and a driven belt wheel, and then a rotating disc is driven to rotate intermittently; and the rotating discdrives the first clamp to rotate intermittently along a fixed disc, the base plate provided with the chip on the first clamp rotates to the position under a welding gun at intervals, and the chip is welded and fixed on the bas