Abstract: A new design and implementation method of a new bandpass filter with based on LTCC is proposed. Instead of the broadside coupling between original resonant cells, the bandpass filter circuit uses six stage resonant cells with compact comb lines and creatively connects the resonant cells,which enhances the bandwidth and sideband rejection. The center frequency of the six stage bandpass filter is 4.65 GHz, the bandwidth is 1.2 GHz, the insertion loss is less than 2.5 dB and the return loss is better than-15 dB in passband, the attenuation at 1 GHz is better than 35 dB. The filter is processed by LTCC technology. The results from measurement are in good agreement with those from the simulation.