On-chip band-pass filter applied to cableless seismograph

The invention discloses an on-chip band-pass filter applied to a cableless seismograph. The filter comprises a first metal zigzag line, a second metal zigzag line, a grounding shielding layer, a first MIM capacitor, a second MIM capacitor, an input feeder line and an output feeder line; and an input end is connected with the input feeder line, the input feeder line is connected to the first metal zigzag line, an output end is connected with the output feeder line, and the output feeder line is connected with the first metal zigzag line. The second metal meander line structure is bent inside the first metal meander line, the first metal meander line and the second metal meander line are in Y-axis symmetry, and the first metal meander line is connected to the peripheral grounding shield in the Y-axis direction. The filter has the advantages that the area of the on-chip band-pass filter can be reduced in a limited mode, and meanwhile strong coupling is achieved. And the two MIM capacitors positioned below the fe